{"id":15577,"date":"2022-04-06T11:35:22","date_gmt":"2022-04-06T06:05:22","guid":{"rendered":"https:\/\/ccssmathanswers.com\/?p=15577"},"modified":"2022-04-07T10:58:55","modified_gmt":"2022-04-07T05:28:55","slug":"big-ideas-math-answers-grade-5-chapter-3","status":"publish","type":"post","link":"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-5-chapter-3\/","title":{"rendered":"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals"},"content":{"rendered":"<p>All topics in Grade 5 Chapter 3 Add and Subtract Decimals are provided below. <strong>Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals<\/strong> topics are given with problems, answers, explanations, practice tests, quiz, and, etc. Take every option we provided for you to prepare well for the exam. Students can easily become math experts by referring to Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals. Download<a href=\"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-5\/\"> Big Ideas Grade 5 Math Answers<\/a> Ch 3 Add and Subtract Decimals to refer to in later times of your practice. Free PDF of BIM Grade 5 Chapter 3 Math Answers are given on this page.<\/p>\n<h2>Big Ideas 5th Grade Chapter 3 Add and Subtract Decimals Math Book Answer Key<\/h2>\n<p>Practice all the problems given here and cross-check the answers to verify your preparation level. As per your preparation, concentrate on the topics. Practice more and gain more knowledge using Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals. <em><strong>Big Ideas Math Book 5th Grade Answer Key Chapter 3 Add and Subtract Decimals<\/strong><\/em> is the best source to prepare for the exams and grab knowledge.<\/p>\n<p><strong>Lesson: 1 Estimate Sum and Differences<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.1_Estimate_Sum_and_Differences\">Lesson 3.1 Estimate Sum and Differences<\/a><\/li>\n<li><a href=\"#Estimate_Sum_and_Differences_Homework_&amp;_Practice_3.1\">Estimate Sum and Differences Homework &amp; Practice 3.1<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 2 Use Models to Add or Subtract Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.2_Use_Models_to_Add_or_Subtract_Decimals\">Lesson 3.2 Use Models to Add or Subtract Decimals<\/a><\/li>\n<li><a href=\"#Use_Models_to_Add_or_Subtract_Decimals_Homework_&amp;_Practice_3.2\">Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 3 Add Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.3_Add_Decimals\">Lesson 3.3 Add Decimals<\/a><\/li>\n<li><a href=\"#Add_Decimals_Homework_&amp;_Practice_3.3\">Add Decimals Homework &amp; Practice 3.3<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 4 Subtract Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.4_Subtract_Decimals\">Lesson 3.4 Subtract Decimals<\/a><\/li>\n<li><a href=\"#Subtract_Decimals_Homework_&amp;_Practice_3.4\">Subtract Decimals Homework &amp; Practice 3.4<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 5 Add and Subtract Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.5_Add_and_Subtract_Decimals\">Lesson 3.5 Add and Subtract Decimals<\/a><\/li>\n<li><a href=\"#Add_and_Subtract_Decimals_Homework_&amp;_Practice_3.5\">Add and Subtract Decimals Homework &amp; Practice 3.5<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 6 Use Mental Maths to Add or Subtract Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.6_Use_Mental_Maths_to_Add_or_Subtract_Decimals\">Lesson 3.6 Use Mental Maths to Add or Subtract Decimals<\/a><\/li>\n<li><a href=\"#Use_Mental_Maths_to_Add_or_Subtract_Decimals_Homework_&amp;_Practice_3.6\">Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6<\/a><\/li>\n<\/ul>\n<p><strong>Lesson: 7 Problem Solving: Money<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_3.7_Problem_Solving:_Money\">Lesson 3.7 Problem Solving: Money<\/a><\/li>\n<li><a href=\"#Problem_Solving:_Money_Homework_&amp;_Practice_3.7\">Problem Solving: Money Homework &amp; Practice 3.7<\/a><\/li>\n<\/ul>\n<p><strong>Chapter: 3 &#8211; Add and Subtract Decimals<\/strong><\/p>\n<ul>\n<li><a href=\"#Add_and_Subtract_Decimals_Performance_Task\">Add and Subtract Decimals Performance Task<\/a><\/li>\n<li><a href=\"#Add_and_Subtract_Decimals_Activity\">Add and Subtract Decimals Activity<\/a><\/li>\n<li><a href=\"#Add_and_Subtract_Decimals_Chapter_Practice\">Add and Subtract Decimals Chapter Practice<\/a><\/li>\n<li><a href=\"#Add_and_Subtract_Decimals_Cumulative_Practice\">Add and Subtract Decimals Cumulative Practice<\/a><\/li>\n<li><a href=\"#Add_and_Subtract_Decimals_STEAM_Performance_Task\">Add and Subtract Decimals STEAM Performance Task<\/a><\/li>\n<\/ul>\n<h3><a id=\"Lesson_3.1_Estimate_Sum_and_Differences\"><\/a>Lesson 3.1 Estimate Sum and Differences<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Estimate each sum or difference.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15578\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-1.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 1\" width=\"495\" height=\"115\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-1.png 495w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-1-300x70.png 300w\" sizes=\"(max-width: 495px) 100vw, 495px\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47038\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1 Estimate Sum and Differences\" width=\"556\" height=\"186\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences.png 556w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-300x100.png 300w\" sizes=\"(max-width: 556px) 100vw, 556px\" \/><\/p>\n<p><strong>Construct Arguments<\/strong><br \/>\nCompare your answers to your partner\u2019s answers. Explain why they are the same or why they are different.<\/p>\n<p>Answer:<br \/>\nMy Friend and My answers are the same in the process of addition and subtraction.<\/p>\n<p><strong>Think and Grow: Estimate Sums and Differences<\/strong><\/p>\n<p>You can use rounding or compatible numbers to estimate sums and differences of decimals.+<br \/>\n<strong>Example<\/strong><br \/>\nEstimate 27.21 + 48.73.<br \/>\nOne Way: Use rounding. Round each addend to the nearest whole number. Then find the sum of the rounded numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15579\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-2.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 2\" width=\"172\" height=\"87\" \/><br \/>\nSo, 27.21 + 48.73 is about _____.<br \/>\nAnswer:<br \/>\nSo, 27.21 + 48.73 is about 76.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47040\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-example.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-example\" width=\"227\" height=\"142\" \/><\/p>\n<p>Another Way: Use compatible numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15580\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-3.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 3\" width=\"177\" height=\"86\" \/><br \/>\nSo, 27.21 + 48.73 is about _______.<br \/>\nAnswer:<br \/>\nSo, 27.21 + 48.73 is about 80.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47042\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-example..png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-example.\" width=\"231\" height=\"141\" \/><\/p>\n<p><strong>Example<\/strong><br \/>\nEstimate 388.5 + 103.2.<br \/>\nOne Way: Use rounding. Round each number to the nearest ten. Then find the difference of the rounded numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15581\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-4.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 4\" width=\"191\" height=\"100\" \/><br \/>\nSo, 388.5 &#8211; 103.2 is about ______.<br \/>\nAnswer:<br \/>\nSo, 388.5 &#8211; 103.2 is about 492.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47043\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-Example...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-Example..\" width=\"232\" height=\"140\" \/><\/p>\n<p>Another Way: Use compatible numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15582\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-5.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 5\" width=\"191\" height=\"93\" \/><br \/>\nSo, 388.5 &#8211; 103.2 is about ______.<br \/>\nAnswer:<br \/>\nSo, 388.5 &#8211; 103.2 is about\u00a0 505.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47044\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-Example.....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-Example....\" width=\"232\" height=\"160\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Estimate the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15583\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-6.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 6\" width=\"77\" height=\"71\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-47045\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-Show-and-Grow1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-Show and Grow1\" width=\"134\" height=\"116\" \/><br \/>\nSum of 112.18 + 47.99 = 160.17<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15584\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-7.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 7\" width=\"69\" height=\"72\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48669\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Estimate-Sums-and-Differences-Show-and-Grow2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Estimate Sums and Differences-Show and Grow2\" width=\"125\" height=\"118\" \/><\/p>\n<p>Difference of 68.8 &#8211; 29.7 = 39.1.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Estimate the sum or difference.<\/strong><br \/>\nQuestion 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15585\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-8.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 8\" width=\"70\" height=\"64\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48670\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice1\" width=\"150\" height=\"118\" \/><br \/>\nDifference of 7.95 &#8211; 1.72 = 6.23.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15586\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-9.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 9\" width=\"72\" height=\"69\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48674\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice4\" width=\"133\" height=\"143\" \/><br \/>\nSum of 237.5 + 345.1 = 582.6.<\/p>\n<p>Question 5.<br \/>\n67.5 + 15.1<br \/>\nAnswer:<br \/>\nSum of 67.5 + 15.1 = 82.6<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48676\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice5\" width=\"86\" height=\"107\" \/><\/p>\n<p>Question 6.<br \/>\n418.9 &#8211; 14.7<br \/>\nAnswer:<br \/>\nDifference of 418.9 &#8211; 14.7 = 404.2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48678\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice6\" width=\"192\" height=\"123\" \/><\/p>\n<p>Question 7.<br \/>\n13.9 &#8211; 8.21<br \/>\nAnswer:<br \/>\nDifference of 13.9 &#8211; 8.21 = 5.69.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48680\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice7\" width=\"176\" height=\"132\" \/><\/p>\n<p>Question 8.<br \/>\n208.6 + 56.9<br \/>\nAnswer:<br \/>\nSum of 208.6 + 56.9 = 265.5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48677\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Apply-and-Grow-Practice8.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Apply and Grow-Practice8\" width=\"179\" height=\"164\" \/><\/p>\n<p>Question 9.<br \/>\n<strong>Number Sense<\/strong><br \/>\nDescartes estimates a sum by rounding each number to the nearest ten. His estimate is 140. Which sums could he have estimated?<br \/>\n83.6 + 59.8<br \/>\n106.92 + 44.68<br \/>\n130.8 + 4.68<br \/>\n73.5 + 67.4<br \/>\nAnswer:<br \/>\nDescartes estimates a sum of 73.5 + 67.4 = 140.9 to be 140 by rounding each number to the nearest ten.<\/p>\n<p>Explanation:<br \/>\nFirst, we need to calculate the sum by rounding each number to the nearest ten:<br \/>\n83.6 + 59.8 = 143.4<br \/>\n106.92 + 44.68 = 151.6<br \/>\n130.8 + 4.68 = 135.48<br \/>\n73.5 + 67.4 = 140.9<\/p>\n<p>Question 10.<br \/>\n<strong>Precision<\/strong><br \/>\nDoes rounding 209.11 &#8211; 104.53 to the nearest ten or to the nearest hundred give an estimate that is closer to the actual difference? Explain.<br \/>\nAnswer:<br \/>\nEstimation to\u00a0 the difference by rounding to nearest ten ( 209 &#8211; 105 = 104 )is closer to the actual difference ( 209.11 &#8211; 104.53 = 104.58 ).<\/p>\n<p>Explanation:<br \/>\nFirst, Estimate the actual difference:<br \/>\n209.11 &#8211; 104.53 = 104.58<br \/>\nSecond, Estimate the difference by rounding to nearest ten:<br \/>\n209 &#8211; 105 = 104<br \/>\nThird, Estimate the difference by rounding to nearest hundred:<br \/>\n200 &#8211; 100 = 100<\/p>\n<p>Question 11.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nNewton packs a suitcase to fly on a plane. His suitcase needs to weigh less than 50.0 pounds. Should Newton overestimate or underestimate the weight of his suitcase? Explain.<br \/>\nAnswer: Newton should overestimate the weight of his suitcase because the weigh should not be more than 50.0 pounds.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nAbout how many feet taller is One World Trade Center than the Empire State Building?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15587\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-10.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 10\" width=\"360\" height=\"334\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-10.png 360w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-10-300x278.png 300w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><br \/>\nRound the height of each building to the nearest hundred because you do not need a precise answer.<br \/>\nOne World Trade Center: 1,800 feet<br \/>\nEmpire State Building: 1,500 feet<br \/>\nSubtract the estimated height of the Empire State Building from the estimated height of One World Trade Center.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15588\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-11.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 11\" width=\"77\" height=\"63\" \/><br \/>\nOne World Trade Center is about ______ feet taller than the Empire State Building.<br \/>\nAnswer:<br \/>\nOne World Trade Center is about\u00a0 300 feet taller than the Empire State Building.<\/p>\n<p>Explanation:<br \/>\nOne World Trade Center: 1,800 feet<br \/>\nEmpire State Building: 1,500 feet<br \/>\nSubtract the estimated height of the Empire State Building from the estimated height of One World Trade Center.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-48693\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Think-and-Grow-Modeling-Real-Life.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Think and Grow-Modeling Real Life\" width=\"116\" height=\"142\" \/> &#8211;<br \/>\nDifference of 1800 &#8211; 1500 = 300 feet.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 12.<br \/>\nAbout how many more tons does the African elephant weigh than the hippopotamus?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15589\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-12.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 12\" width=\"254\" height=\"172\" \/><br \/>\nAnswer:<br \/>\nWeight of African Elephant is 3.4 Tons more than the Weight of Hippopotamus.<\/p>\n<p>Explanation:<br \/>\nWeight of African Elephant = 5.7 Tons<br \/>\nWeight of Hippopotamus = 2.3 Tons<br \/>\nDifference:<br \/>\nWeight of African Elephant &#8211; Weight of Hippopotamus = 5.7 &#8211; 2.3 = 3.4 Tons<\/p>\n<p>&nbsp;<\/p>\n<p>Question 13.<br \/>\nOne cup of wild rice has 6.5 grams of protein. One cup of shredded chicken has 36.9 more grams of protein than 1 cup of wild rice. About how many grams of protein are in 1 cup of chicken?<br \/>\nAnswer:<br \/>\n1 cup of chicken = 43.4 grams of protein.<\/p>\n<p>Explanation:<br \/>\nOne cup of wild rice = 6.5 grams<br \/>\nOne cup of shredded chicken has 36.9 more grams of protein than 1 cup of wild rice<br \/>\n=&gt; 1 cup of chicken = 36.9 grams + 6.5 grams<br \/>\n=&gt; 1 cup of chicken = 43.4 grams of protein.<\/p>\n<p>Question 14.<br \/>\nThe speed Earth orbits the Sun is 18.5 miles per second. This speed is 3.3 miles per second slower than the speed Venus orbits the Sun. About how fast does Venus orbit the Sun?<br \/>\nAnswer:<br \/>\nSpeed of Venus orbit the Sun is 15.2 miles fast than the Earth orbit per second.<\/p>\n<p>Explanation:<br \/>\nSpeed of Earth orbits the Sun = 18.5 miles<br \/>\nThis speed is 3.3 miles per second slower than the speed Venus orbits the Sun<br \/>\n=&gt; Speed of\u00a0 Venus orbit the Sun = 18.5 &#8211; 3.3 miles = 15.2 miles<\/p>\n<h3><a id=\"Estimate_Sum_and_Differences_Homework_&amp;_Practice_3.1\"><\/a>Estimate Sum and Differences Homework &amp; Practice 3.1<\/h3>\n<p><strong>Estimate the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15590\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-13.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 13\" width=\"78\" height=\"70\" \/><br \/>\nAnswer:<br \/>\nSum of 76.81 + 2.17 =78.98.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49468\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.1\" width=\"130\" height=\"143\" \/><\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15591\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-14.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 14\" width=\"70\" height=\"76\" \/><br \/>\nAnswer:<br \/>\nDifference of 79.1 &#8211; 32.8 = 46.3<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49469\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.2\" width=\"116\" height=\"141\" \/><\/p>\n<p>Question 3.<br \/>\n418.44 &#8211; 23.61<br \/>\nAnswer:<br \/>\nDifference of 418.44 &#8211; 23.61 = 442.05<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49470\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.3\" width=\"231\" height=\"193\" \/><\/p>\n<p>Question 4.<br \/>\n90.7 + 2.3<br \/>\nAnswer:<br \/>\nSum of 90.7 + 2.3 = 93<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49471\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.4\" width=\"220\" height=\"182\" \/><\/p>\n<p>Question 5.<br \/>\n6.24 &#8211; 3.8<br \/>\nAnswer:<br \/>\nDifference of 6.24 &#8211; 3.8 = 2.44<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49475\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.5....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.5...\" width=\"208\" height=\"145\" \/><\/p>\n<p>Question 6.<br \/>\n837.51 + 149.27<br \/>\nAnswer:<br \/>\nSum of 837.51 + 149.27 = 986.78<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49476\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.6\" width=\"224\" height=\"207\" \/><\/p>\n<p>Question 7.<br \/>\n<strong>Open-Ended<\/strong><br \/>\nWrite a decimal addition problem that has an estimated sum of 35.<br \/>\nAnswer:<br \/>\nSum of 16.3+18.7 = 35<\/p>\n<p>Explanation:<br \/>\n16.3+18.7 =??<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-49477\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.1-Estimate-Sum-and-Differences-Homework-Practice-3.1.7-Open-Ended.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.1-Estimate Sum and Differences Homework &amp; Practice 3.1.7-Open-Ended\" width=\"211\" height=\"185\" \/><\/p>\n<p>Question 8.<br \/>\n<strong>Reasoning<\/strong><br \/>\nDescribe a situation when you would estimate the difference of 25.4 and 19.8 to the nearest whole number.<br \/>\nAnswer:<br \/>\nEstimate the difference between 25.4\u00a0 and\u00a0 19.8 by to round each number to the nearest whole number and then subtract the rounded numbers.<\/p>\n<p>Explanation:<br \/>\nRounding number to nearest whole number of 25.4 = 25<br \/>\nRounding number to nearest whole number of 19.8 = 20<br \/>\nDifference = Rounding number to nearest whole number of 25.4 &#8211; Rounding number to nearest whole number of 19.8<br \/>\n= 25 &#8211; 20<br \/>\n= 5<\/p>\n<p>Question 9.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYour friend participates in a 3.1-mile race. She walks for 1.4 miles of the race and runs the rest. About how many miles does your friend run?<br \/>\nAnswer:<br \/>\nNumber of miles my Friend runs = 1.7 miles.<\/p>\n<p>Explanation:<br \/>\nNumber of miles the race is my Friend participates\u00a0 = 3.1 mils<br \/>\nNumber of miles my Friend walks = 1.4 miles<br \/>\nNumber of miles my Friend runs = Number of miles the race is my Friend participates\u00a0 &#8211; Number of miles my Friend walks<br \/>\n=&gt;\u00a0 3.1 &#8211; 1.4<br \/>\n=&gt; 1.7 miles.<\/p>\n<p>Question 10.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYour phone has 16,000 megabytes of total storage space. About how much storage space is free?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15592\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.1-15.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.1 15\" width=\"154\" height=\"256\" \/><br \/>\nAnswer:<br \/>\nFree Storage space left in Phone = 2944.8 megabytes<\/p>\n<p>Explanation:<br \/>\nTotal storage space of Phone = 16000 megabytes<br \/>\nMemory Storage for Photos = 3111.1 megabytes<br \/>\nMemory Storage for Applications = 5345.3 megabytes<br \/>\nMemory Storage for Music = 4598.8 megabytes<br \/>\nFree Storage space = Total storage space of Phone &#8211; ( Memory Storage for Photos + Memory Storage for Applications +<br \/>\nMemory Storage for Music)<br \/>\n=&gt; 16000 &#8211; ( 3111.1 + 5345.3 + 4598.8 )<br \/>\n=&gt; 16000 &#8211; 13055.2<br \/>\n=&gt; 2944.8 megabytes<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the sum.<\/strong><br \/>\nQuestion 11.<br \/>\n\\(\\frac{2}{8}+\\frac{4}{8}\\) = ______<br \/>\nAnswer:<br \/>\n\\(\\frac{2}{8}+\\frac{4}{8}\\) = \\(\\frac{3}{4}\\) .<\/p>\n<p>Explanation:<br \/>\n\\(\\frac{2}{8}+\\frac{4}{8}\\) = \\(\\frac{2+4}{8}\\) = \\(\\frac{6}{8}\\) = \\(\\frac{3}{4}\\)<\/p>\n<p>Question 12.<br \/>\n\\(\\frac{1}{2}+\\frac{5}{2}\\) = ______<br \/>\nAnswer:<br \/>\n\\(\\frac{1}{2}+\\frac{5}{2}\\) = \\({3}\\) .<\/p>\n<p>Explanation:<br \/>\n\\(\\frac{1}{2}+\\frac{5}{2}\\) = \\(\\frac{1+5}{2}\\) = \\(\\frac{6}{2}\\) = \\({3}\\)<\/p>\n<p>Question 13.<br \/>\n1 + \\(\\frac{1}{4}\\) = ______<br \/>\nAnswer:<br \/>\n1 + \\(\\frac{1}{4}\\) = \\(\\frac{5}{4}\\) .<\/p>\n<p>Explanation:<br \/>\n1 + \\(\\frac{1}{4}\\) = \\(\\frac{4+1}{4}\\) = \\(\\frac{5}{4}\\)<\/p>\n<h3><a id=\"Lesson_3.2_Use_Models_to_Add_or_Subtract_Decimals\"><\/a>Lesson 3.2 Use Models to Add or Subtract Decimals<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use base ten blocks to find 1.4 + 0.7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15593\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-1.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 1\" width=\"293\" height=\"123\" \/><\/p>\n<p>Use base ten blocks to find 1.16 &#8211; 0.89.<br \/>\nAnswer:<br \/>\nSo, 1.16 &#8211; 0.89 = 0.27<\/p>\n<p>Explanation:<br \/>\n1.16 &#8211; 0.89 = <img loading=\"lazy\" class=\"alignnone size-full wp-image-49570\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals.-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2 Use Models to Add or Subtract Decimals.\" width=\"197\" height=\"117\" \/>\u00a0&#8211; <img loading=\"lazy\" class=\"alignnone size-full wp-image-49568\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals...-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2 Use Models to Add or Subtract Decimals...\" width=\"232\" height=\"173\" \/>= <img loading=\"lazy\" class=\"alignnone size-full wp-image-49571\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals......png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2 Use Models to Add or Subtract Decimals.....\" width=\"186\" height=\"157\" \/><\/p>\n<p><strong>Repeated Reasoning<\/strong><br \/>\nWhy can you use base ten blocks to model ones, tenths, and hundredths?<br \/>\nAnswer:<br \/>\nYes, we can use base ten blocks to model ones, tenths, and hundredths because they represent the numeral values in blocks which helps is east calculation and understanding.<\/p>\n<p><strong>Think and Grow: Use Models to Add or Subtract Decimals<\/strong><\/p>\n<p>You have used models to add or subtract whole numbers. You can use similar models to add or subtract decimals.<br \/>\n<strong>Example<\/strong><br \/>\nFind 1.5 + 2.7.<br \/>\nMake a quick sketch. Add the tenths, then the ones.<br \/>\nRegroup 10 tenths as 1 one.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15594\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-2.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 2\" width=\"182\" height=\"185\" \/><br \/>\nSo, 1.5 + 2.7 = _____.<br \/>\nAnswer:<br \/>\nSo, 1.5 + 2.7 = 3.2<\/p>\n<p>Explanation:<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-2.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 2\" \/><\/p>\n<p><strong>Example<\/strong><br \/>\nFind 2.42 &#8211; 1.24.<\/p>\n<p>So, 2.42 &#8211; 1.24 = _____.<br \/>\nAnswer:<br \/>\nSo, 2.42 &#8211; 1.24 = 1.18<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50284\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Use-Models-to-Add-or-Subtract-Decimals-Example-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Think and Grow-Use Models to Add or Subtract Decimals-Example\" width=\"595\" height=\"336\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Use-Models-to-Add-or-Subtract-Decimals-Example-1.png 595w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Use-Models-to-Add-or-Subtract-Decimals-Example-1-300x169.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Make a quick sketch to find the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n3.15 + 0.92 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15596\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-4.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 4\" width=\"226\" height=\"131\" \/><br \/>\nAnswer:<br \/>\n3.15 + 0.92 = 4.07<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50197\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Show and Grow1\" width=\"554\" height=\"357\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow1.png 554w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow1-300x193.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>Question 2.<br \/>\n1.26 &#8211; 0.83 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15597\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-5.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 5\" width=\"242\" height=\"133\" \/><br \/>\nAnswer:<br \/>\n1.26 &#8211; 0.83 = 0.43<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50276\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow2-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Show and Grow2\" width=\"585\" height=\"343\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow2-1.png 585w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Show-and-Grow2-1-300x176.png 300w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Make a quick sketch to find the sum or difference.<\/strong><br \/>\nQuestion 3.<br \/>\n1.61 + 0.22 = _____<br \/>\nAnswer:<br \/>\n1.61 + 0.22 = 1.83<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50285\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Apply and Grow-Practice3\" width=\"561\" height=\"357\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice3.png 561w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice3-300x191.png 300w\" sizes=\"(max-width: 561px) 100vw, 561px\" \/><\/p>\n<p>Question 4.<br \/>\n2.4 &#8211; 1.3 = _____<br \/>\nAnswer:<br \/>\n2.4 &#8211; 1.3 = 1.1<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50287\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Apply and Grow-Practice4\" width=\"593\" height=\"325\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice4.png 593w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice4-300x164.png 300w\" sizes=\"(max-width: 593px) 100vw, 593px\" \/><\/p>\n<p>Question 5.<br \/>\n2.2 + 0.9 = _______<br \/>\nAnswer:<br \/>\n2.2 + 0.9 = 3.1<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50286\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Apply and Grow-Practice5\" width=\"547\" height=\"338\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice5.png 547w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice5-300x185.png 300w\" sizes=\"(max-width: 547px) 100vw, 547px\" \/><\/p>\n<p>Question 6.<br \/>\n1.56 &#8211; 1.08 = ______<br \/>\nAnswer:<br \/>\n1.56 &#8211; 1.08 = 0.48<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50802\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Apply and Grow-Practice6\" width=\"561\" height=\"340\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6.png 561w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6-300x182.png 300w\" sizes=\"(max-width: 561px) 100vw, 561px\" \/><\/p>\n<p>Question 7.<br \/>\n<strong>Number Sense<\/strong><br \/>\nNewton adds two decimals that are each greater than 0.5. What can you conclude about the sum?<br \/>\nAnswer:<br \/>\nIf Newton&#8217;s adds two decimals that are each greater than 0.5 then the Sum of the decimal numbers is going to be more than 0.5.<\/p>\n<p>Explanation:<br \/>\nFirst Decimal Number= 1.2<br \/>\nSecond Decimal Number = 0.8<br \/>\nSum = First Decimal Number + Second Decimal Number<br \/>\n= 1.2 + 0.8 = 2.0<\/p>\n<p>Question 8.<br \/>\n<strong>Structure<\/strong><br \/>\nWrite an equation represented by the quick sketch.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15598\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-6.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 6\" width=\"287\" height=\"188\" \/><br \/>\nAnswer:<br \/>\nThe Equation for the given quick Sketch :<br \/>\n3.54 + 1.63 = 5.17<\/p>\n<p>Question 9.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nUse a model to find 1.31 &#8211; 0.4.<br \/>\nAnswer:<br \/>\n1.31 &#8211; 0.4 = 0.91.54<\/p>\n<p>Explanation:<br \/>\n1.31 &#8211; 0.4 = ???<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50817\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6-DIG-DEEPER-9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Apply and Grow-Practice6-DIG DEEPER!-9\" width=\"544\" height=\"323\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6-DIG-DEEPER-9.png 544w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Apply-and-Grow-Practice6-DIG-DEEPER-9-300x178.png 300w\" sizes=\"(max-width: 544px) 100vw, 544px\" \/><\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nHow much longer is the duration of the wooden roller-coaster ride than the duration of the steel roller-coaster ride?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15599\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-7.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 7\" width=\"365\" height=\"180\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-7.png 365w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-7-300x148.png 300w\" sizes=\"(max-width: 365px) 100vw, 365px\" \/><br \/>\nFind the difference of the durations: 4.25 &#8211; 1.50.<br \/>\nMake a quick sketch of 4.25.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15600\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-8.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 8\" width=\"603\" height=\"229\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-8.png 603w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-8-300x114.png 300w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/><br \/>\nSo, 4.25 &#8211; 1.50<br \/>\nAnswer:<br \/>\nSo, 4.25 &#8211; 1.50 = 2.75.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50820\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life.-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Think and Grow-Modeling Real Life.\" width=\"572\" height=\"324\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life.-1.png 572w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life.-1-300x170.png 300w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><br \/>\nSo, 4.25 &#8211; 1.50 = ???<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50822\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Think and Grow-Modeling Real Life...\" width=\"579\" height=\"318\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life....png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Think-and-Grow-Modeling-Real-Life...-300x165.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 10.<br \/>\nA football player completes a 40-yard dash in 5.84 seconds. Another player completes it in 4.56 seconds. How much longer does it take the first player to complete the 40-yard dash than the second player?<br \/>\nAnswer:<br \/>\nTime taken by the the first player to complete the 40-yard dash 1.28 seconds more than the second player.<\/p>\n<p>Explanation:<br \/>\nTime taken by the First player to complete the 40-yard dash = 5.84 seconds<br \/>\nTime taken by the Second player to complete the 40-yard dash = 4.56 seconds<br \/>\nTime taken by the the first player to complete the 40-yard dash than the second player = Time taken by the First player to complete the 40-yard dash &#8211; Time taken by the Second player to complete the 40-yard dash<br \/>\n= 5.84 seconds &#8211; 4.56 seconds<br \/>\n= 1.28 seconds.<\/p>\n<p>Question 11.<br \/>\nWhat is the total length of the narwhal?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15601\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-9.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 9\" width=\"280\" height=\"94\" \/><br \/>\nAnswer:<br \/>\nTotal Length of whole body Narwhal = 16.40 feet.<\/p>\n<p>Explanation:<br \/>\nLength of Narwhal tusk = 4.92 feet<br \/>\nLength of Narwhal Body = 11.48 feet<br \/>\nTotal Length of whole body Narwhal = Length of Narwhal tusk + Length of Narwhal Body<br \/>\n= 4.92 feet + 11.48 feet<br \/>\n= 16.40 feet.<\/p>\n<p>Question 12.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nAn Olympic gymnast scores 6.6 points for skill. She starts with 10.0 points for execution, then loses 0.4 point for execution errors. What is the gymnast\u2019s final score?<br \/>\nAnswer:<br \/>\nFinal score points of Olympic gymnast = 16.2.<\/p>\n<p>Explanation:<br \/>\nScore points of Olympic gymnast for skill = 6.6<br \/>\nScore points of Olympic gymnast for execution = 10.0<br \/>\nScore points lost of Olympic gymnast for execution errors = 0.4<br \/>\nFinal score points of Olympic gymnast = Score points of Olympic gymnast for skill + Score points of Olympic gymnast for execution &#8211; Score points lost of Olympic gymnast for execution errors<br \/>\n= 6.6 + 10.0 &#8211; 0.4<br \/>\n= 16.6 &#8211; 0.4<br \/>\n= 16.2<\/p>\n<h3><a id=\"Use_Models_to_Add_or_Subtract_Decimals_Homework_&amp;_Practice_3.2\"><\/a>Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2<\/h3>\n<p><strong>Make a quick sketch to find the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n2.6 + 1.3 = ______<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15602\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-10.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 10\" width=\"129\" height=\"177\" \/><br \/>\nAnswer:<br \/>\n2.6 + 1.3 = 3.9.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50831\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.1\" width=\"266\" height=\"353\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.1.png 266w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.1-226x300.png 226w\" sizes=\"(max-width: 266px) 100vw, 266px\" \/><\/p>\n<p>Question 2.<br \/>\n1.36 &#8211; 0.25 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15603\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-11.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 11\" width=\"240\" height=\"167\" \/><br \/>\nAnswer:<br \/>\n1.36 &#8211; 0.25 = 1.11<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50851\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.2\" width=\"535\" height=\"319\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.2.png 535w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.2-300x179.png 300w\" sizes=\"(max-width: 535px) 100vw, 535px\" \/><\/p>\n<p>Question 3.<br \/>\n0.84 &#8211; 0.17 = _____<br \/>\nAnswer:<br \/>\n0.84 &#8211; 0.17 = 0.67.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50856\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.3\" width=\"577\" height=\"332\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.3.png 577w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.3-300x173.png 300w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/><\/p>\n<p>Question 4.<br \/>\n1.25 + 1.55 = _____<br \/>\nAnswer:<br \/>\n1.25 + 1.55 = 2.80.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50832\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.4\" width=\"551\" height=\"323\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.4.png 551w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.4-300x176.png 300w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/><\/p>\n<p>Question 5.<br \/>\n2.6 &#8211; 1.9 = ______<br \/>\nAnswer:<br \/>\n2.6 &#8211; 1.9 = 0.7.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50861\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.5\" width=\"444\" height=\"331\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.5.png 444w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.5-300x224.png 300w\" sizes=\"(max-width: 444px) 100vw, 444px\" \/><\/p>\n<p>Question 6.<br \/>\n3.9 + 0.6 = ______<br \/>\nAnswer:<br \/>\n3.9 + 0.6 = 4.5.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-50833\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-Use Models to Add or Subtract Decimals Homework &amp; Practice 3.2.6\" width=\"336\" height=\"347\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.6.png 336w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-Use-Models-to-Add-or-Subtract-Decimals-Homework-Practice-3.2.6-290x300.png 290w\" sizes=\"(max-width: 336px) 100vw, 336px\" \/><\/p>\n<p>Question 7.<br \/>\n<strong>Structure<\/strong><br \/>\nWrite an equation represented by the quick sketch.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15604\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-12.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 12\" width=\"190\" height=\"155\" \/><br \/>\nAnswer:<\/p>\n<p>Question 8.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWhat is the greatest possible difference of two decimals to the hundredths place that are between 0 and 1?<br \/>\nAnswer:<br \/>\n0.01 is the greatest possible difference of two decimals to the hundredths place that are between 0 and 1.<\/p>\n<p>Question 9.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nWrite a decimal addition equation that requires regrouping the tenths. Explain how you know you need to regroup to add.<br \/>\nAnswer:<br \/>\nFind the Sum of 1.5 +2.7 = 4.2<\/p>\n<p>Explanation:<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-51232\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.2-DIG-DEEPER-9..png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.2-DIG DEEPER-9.\" width=\"247\" height=\"240\" \/><\/p>\n<p>Question 10.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThe fastest 1-mile sack race was completed in 16.68 minutes. The fastest 1-mile piggyback race was completed in 11.18 minutes. How much longer did it take to complete the sack race than the piggyback race?<br \/>\nAnswer:<br \/>\nTime taken to complete the sack race than the piggyback race = 5.5 minutes.<\/p>\n<p>Explanation:<br \/>\nTime taken to complete fastest 1-mile sack race = 16.68 minutes<br \/>\nTime taken to complete fastest 1-mile piggyback race\u00a0 = 11.18 minutes<br \/>\nTime taken to complete the sack race than the piggyback race = Time taken to complete fastest 1-mile sack race &#8211; Time taken to complete fastest 1-mile piggyback race<br \/>\n= 16.68\u00a0 &#8211; 11.18<br \/>\n= 5.5 minutes<\/p>\n<p>Question 11<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nHow many pounds of honey do the hives produce in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15605\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-13.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 13\" width=\"321\" height=\"185\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-13.png 321w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-13-300x173.png 300w\" sizes=\"(max-width: 321px) 100vw, 321px\" \/><br \/>\nAnswer:<br \/>\nTotal number of pounds of Honey produced by Hive A\u00a0 and Hive B = 36.23 lb.<\/p>\n<p>Explanation:<br \/>\nNumber of pounds of Honey Hive A\u00a0 produce = 15.25 lb.<br \/>\nNumber of pounds of Honey Hive B\u00a0 produce = 20.98 lb.<br \/>\nTotal number of pounds of Honey produced Hive A and Hive B = Number of pounds of Honey Hive A\u00a0 produce + Number of pounds of Honey Hive B\u00a0 produce<br \/>\n= 15.25 + 20.98<br \/>\n= 36.23 lb.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the perimeter of the rectangle.<\/strong><br \/>\nQuestion 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15606\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-14.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 14\" width=\"197\" height=\"115\" \/><br \/>\nAnswer:<br \/>\nPerimeter of Rectangle = 102 yards.<\/p>\n<p>Explanation:<br \/>\nLength of Rectangle = 32 yards.<br \/>\nWidth of Rectangle = 19 yards<br \/>\nPerimeter of Rectangle = 2 (l + w)<br \/>\n= 2( 32 + 19 )<br \/>\n= 2 \u00d7 51<br \/>\n= 102 yards.<\/p>\n<p>Question 13.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15607\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.2-15.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.2 15\" width=\"118\" height=\"128\" \/><br \/>\nAnswer:<br \/>\nPerimeter of Rectangle = 114 mm.<\/p>\n<p>Explanation:<br \/>\nLength of Rectangle = 36 mm<br \/>\nWidth of Rectangle = 21 mm<br \/>\nPerimeter of Rectangle = 2 (l + w)<br \/>\n= 2 ( 36 + 21 )<br \/>\n= 2 \u00d7 57<br \/>\n= 114 mm.<\/p>\n<h3><a id=\"Lesson_3.3_Add_Decimals\"><\/a>Lesson 3.3 Add Decimals<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Find the sum.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15608\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-1.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 1\" width=\"158\" height=\"94\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15609\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-2.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 2\" width=\"84\" height=\"84\" \/><\/p>\n<p>Use a model to find the sum. Draw your model.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15610\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-3.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 3\" width=\"71\" height=\"80\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51233\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals\" width=\"122\" height=\"121\" \/><img loading=\"lazy\" class=\"alignnone size-full wp-image-51235\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals..-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals..\" width=\"117\" height=\"124\" \/><br \/>\nExplanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51234\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals..\" width=\"599\" height=\"381\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals...png 599w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals..-300x191.png 300w\" sizes=\"(max-width: 599px) 100vw, 599px\" \/><\/p>\n<p><strong>Construct Arguments<\/strong><br \/>\n+-?<br \/>\nAnswer:<br \/>\nThe adding of decimals is same as to that of adding of whole numbers because here the process we do is adding the numbers in both.<\/p>\n<p><strong>Think and Grow: Add Decimals<\/strong><\/p>\n<p>To add decimals, add like place values.<br \/>\n<strong>Example<\/strong><br \/>\nAdd: 52.76 + 38.18. Estimate ______<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15611\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-4.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 4\" width=\"682\" height=\"427\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-4.png 682w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-4-300x188.png 300w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/><br \/>\nAnswer:<br \/>\nSum of 52.76\u00a0 +38.18 = 90.94<br \/>\n90.94 is close to 91.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Find the sum. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15612\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-5.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 5\" width=\"68\" height=\"89\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51238\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow1...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow1..\" width=\"112\" height=\"120\" \/><br \/>\n5.6 is close to 6.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51661\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow1-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow1\" width=\"980\" height=\"536\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow1-1.png 980w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow1-1-300x164.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow1-1-768x420.png 768w\" sizes=\"(max-width: 980px) 100vw, 980px\" \/><\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15613\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-6.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 6\" width=\"63\" height=\"68\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51240\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow2-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow2\" width=\"109\" height=\"98\" \/><br \/>\n1.76 is close to 2.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51239\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow2\" width=\"641\" height=\"377\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow2.png 641w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow2-300x176.png 300w\" sizes=\"(max-width: 641px) 100vw, 641px\" \/><\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15614\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-7.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 7\" width=\"56\" height=\"71\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51452\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3..png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow3.\" width=\"134\" height=\"119\" \/><br \/>\n93.7 is close to 94.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51629\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3.-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow3.\" width=\"1024\" height=\"578\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3.-1.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3.-1-300x169.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3.-1-768x434.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15615\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-8.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 7\" width=\"75\" height=\"85\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51642\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow4....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow4...\" width=\"188\" height=\"195\" \/><br \/>\n16.51 is close to 17.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51627\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow4-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow4\" width=\"773\" height=\"429\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow4-1.png 773w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow4-1-300x166.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow4-1-768x426.png 768w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Find the sum. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15616\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-9.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 9\" width=\"71\" height=\"78\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51635\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow3....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow3...\" width=\"108\" height=\"93\" \/><br \/>\n8.89 is close to 9.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51634\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Apply and Grow-Practice1\" width=\"540\" height=\"417\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice1.png 540w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice1-300x232.png 300w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><br \/>\nCheck:<br \/>\n8.89 &#8211; 1.07<br \/>\n= 7.82.<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15617\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-10.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 10\" width=\"65\" height=\"73\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51643\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow6....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow6...\" width=\"203\" height=\"189\" \/><br \/>\n38.7 is close to 39.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51641\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Apply and Grow-Practice6\" width=\"576\" height=\"421\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice6.png 576w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Apply-and-Grow-Practice6-300x219.png 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/><br \/>\nCheck:<br \/>\n38.7 &#8211; 15.1<br \/>\n= 23.6.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15618\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-11.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 11\" width=\"83\" height=\"64\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51647\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow7.....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow7....\" width=\"104\" height=\"112\" \/><br \/>\n640.89 is close to 641.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51645\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow7\" width=\"752\" height=\"421\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow7.png 752w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow7-300x168.png 300w\" sizes=\"(max-width: 752px) 100vw, 752px\" \/><\/p>\n<p>Check:<br \/>\n640.89 &#8211; 78.04<br \/>\n= 562.65.<\/p>\n<p>Question 8.<br \/>\n2.5 + 4.6 = _____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51660\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow8...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow8..\" width=\"99\" height=\"113\" \/><br \/>\n7.1 is close to 7.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51659\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow8.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow8\" width=\"758\" height=\"439\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow8.png 758w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow8-300x174.png 300w\" sizes=\"(max-width: 758px) 100vw, 758px\" \/><\/p>\n<p>Check:<br \/>\n7.1 &#8211; 4.6<br \/>\n= 2.5.<\/p>\n<p>Question 9.<br \/>\n107.5 + 63.5 = _____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51664\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow9...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow9..\" width=\"133\" height=\"115\" \/><br \/>\n171.0 is close to 171.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51663\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow9\" width=\"757\" height=\"417\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow9.png 757w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow9-300x165.png 300w\" sizes=\"(max-width: 757px) 100vw, 757px\" \/><br \/>\nCheck:<br \/>\n171.0 &#8211; 63.5<br \/>\n= 107.5.<\/p>\n<p>Question 10.<br \/>\n49.87 + 32.53 = ______<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51666\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow10...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow10..\" width=\"122\" height=\"158\" \/><br \/>\n82.40 is close to 82.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51665\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow10.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow10\" width=\"931\" height=\"593\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow10.png 931w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow10-300x191.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow10-768x489.png 768w\" sizes=\"(max-width: 931px) 100vw, 931px\" \/><br \/>\nCheck:<br \/>\n82.40 &#8211; 32.53<br \/>\n= 49.87.<\/p>\n<p>Question 11.<br \/>\n96.5 + 4.1 = _____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51670\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow11...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow11..\" width=\"148\" height=\"158\" \/><br \/>\n100.6 is close to 101.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51668\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow11.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Show and Grow11\" width=\"922\" height=\"602\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow11.png 922w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow11-300x196.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Show-and-Grow11-768x501.png 768w\" sizes=\"(max-width: 922px) 100vw, 922px\" \/><br \/>\nCheck:<br \/>\n100.6 &#8211; 4.1<br \/>\n= 96.5.<\/p>\n<p>Question 12.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWhich expressions have a sum greater than 24.7?<br \/>\n20.9 + 3.8<br \/>\n15.96 + 9.51<br \/>\n14.23 + 9.85<br \/>\n10.62 + 14.11<br \/>\nAnswer:<br \/>\nThe Sum of 15.96 + 9.51= 25.74 which is\u00a0 greater than 24.7.<\/p>\n<p>Explanation:<br \/>\nFirst, find the sum:<br \/>\n20.9 + 3.8 = 24.7<br \/>\n15.96 + 9.51 = 25.47<br \/>\n14.23 + 9.85 = 24.08<br \/>\n10.62 + 14.11 = 24.73<\/p>\n<p>Question 13.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nYour friend finds 34.5 + 6.8 and gets a sum of 413. Without adding, explain how you know your friend\u2019s answer is correct.<br \/>\nAnswer:<br \/>\nMy Friend&#8217;s answer is incorrect because he did not add the digits correctly .<\/p>\n<p>Explanation:<br \/>\nFind the Sum :<br \/>\n34.5 + 6.8 = 41.3<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51672\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-YOU-BE-THE-TEACHER13.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-YOU BE THE TEACHER13\" width=\"140\" height=\"155\" \/><\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nYou have 6.5 megabytes of storage space left on your tablet. Do you have enough space to download both of the ebooks?<br \/>\nAdd the ebook file sizes.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15619\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-12.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 12\" width=\"396\" height=\"157\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-12.png 396w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-12-300x119.png 300w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><br \/>\nCompare the sum of the file sizes to the available space on your tablet.<br \/>\nYou ______ have enough room to download both ebooks.<br \/>\nAnswer:<br \/>\nI\u00a0 have enough space to download both ebooks.<\/p>\n<p>Explanation:<br \/>\nStorage space for tale of the Monster = 3.8 megabytes<br \/>\nStorage space for In the Game = 2.5 megabytes<br \/>\nTotal storage for tale of the Monster and In the Game = 3.8 + 2.5 = 6.3 megabytes<br \/>\nStorage space left on the Tablet = 6.5 megabytes<br \/>\nStorage space left after downloading the eBooks = Storage space left on the Tablet\u00a0 &#8211; Total storage for tale of the Monster and In the Game<br \/>\n= 6.5 &#8211; 6.3<br \/>\n= 0.2 megabytes<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 14.<br \/>\nA chef needs 3.75 pounds of fish for a dinner party. She catches a fish that is 2.50 pounds and another fish that is 1.75 pounds. Does she catch enough fish for her dinner party?<br \/>\nAnswer:<br \/>\nShe catches enough fish for her dinner party in fact 0.5 pounds more weight fish she catches.<\/p>\n<p>Explanation:<br \/>\nWeight of first fish = 2.50 pounds<br \/>\nWeight of Second Fish = 1.75\u00a0pounds<br \/>\nWeight of both Fishes = 2.50 + 1.75 = 4.25 pounds<br \/>\nWeight of the fish needed for a dinner party = 3.75 pounds<br \/>\nDifference:<br \/>\nWeight of fishes caught &#8211; Weight of the fish needed for a dinner party<br \/>\n= 4.25 &#8211; 3.75<br \/>\n= 0.5 pounds<\/p>\n<p>Question 15.<br \/>\nYour school\u2019s long jump record is 5.51 meters. You jump 3.38 meters on your first attempt. Your second attempt is 1.56 meters longer than your first. Do you break your school\u2019s record?<br \/>\nAnswer:<br \/>\nI have broke the school record by jumping more 2.81 meters than the record distance.<\/p>\n<p>Explanation:<br \/>\nDistance long jump record in the school = 5.51 meters<br \/>\nDistance jumped on my first attempt = 3.38 meters<br \/>\nYour second attempt is 1.56 meters longer than your first.<br \/>\n=&gt; Distance jumped on my second attempt = 1.56+ 3.38 meters = 4.94 meters<br \/>\nTotal distance jumped by me = Distance jumped on my first attempt + Distance jumped on my second attempt<br \/>\n= 3.38 + 4.94<br \/>\n= 8.32 meters<br \/>\nDifference:<br \/>\nTotal distance jumped by me &#8211; Distance long jump record in the school<br \/>\n= 8.32 &#8211; 5.51<br \/>\n= 2.81 meters<\/p>\n<p>Question 16.<br \/>\nThe melting point of aluminum is 403.86 degrees Celsius cooler than the melting point of gold. What is the melting point of gold?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15620\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-13.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 13\" width=\"175\" height=\"192\" \/><br \/>\nAnswer:<br \/>\nThe melting point of Gold = 1063.32 \u00a0degrees Celsius.<\/p>\n<p>Explanation:<br \/>\nThe melting point of aluminum = 660.32\u00a0degrees Celsius<br \/>\nThe melting point of aluminum is 403.86 degrees Celsius cooler than the melting point of gold.<br \/>\n=&gt; Let the melting point of Gold be X<br \/>\n=&gt; X- 403.86 = 660.32<br \/>\n=&gt; X = 660.32 + 403<br \/>\n=&gt; X = 1063.32 \u00a0degrees Celsius.<\/p>\n<h3><a id=\"Add_Decimals_Homework_&amp;_Practice_3.3\"><\/a>Add Decimals Homework &amp; Practice 3.3<\/h3>\n<p><strong>Find the sum. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15621\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-14.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 14\" width=\"63\" height=\"80\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51675\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.1...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.1..\" width=\"172\" height=\"133\" \/><br \/>\n8.8 is close to 9.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51674\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.1\" width=\"767\" height=\"586\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.1.png 767w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.1-300x229.png 300w\" sizes=\"(max-width: 767px) 100vw, 767px\" \/><br \/>\nCheck:<br \/>\n8.8 &#8211; 1.3 = 7.5.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15622\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-15.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 15\" width=\"78\" height=\"70\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51677\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.2...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.2..\" width=\"181\" height=\"126\" \/><br \/>\n683.89 is close to 684.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51676\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.2\" width=\"773\" height=\"593\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.2.png 773w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.2-300x230.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.2-768x589.png 768w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><br \/>\nCheck:<br \/>\n683.89 &#8211; 82.31 = 601.58.<\/p>\n<p>Question 3.<br \/>\n19.73 + 7.16 = _____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51680\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.3...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.3..\" width=\"146\" height=\"128\" \/><br \/>\n26.89 is close to 27.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51679\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.3\" width=\"900\" height=\"572\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.3.png 900w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.3-300x191.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.3-768x488.png 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><br \/>\nCheck:<br \/>\n26.89 &#8211; 7.16 = 19.73.<\/p>\n<p>Question 4.<br \/>\n84.6 + 44.7 = ______<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51682\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.4...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.4..\" width=\"155\" height=\"144\" \/><br \/>\n129.3 is close to 129.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51890\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Homework-Practice-3.3.4-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3-Add Decimals Homework &amp; Practice 3.3.4\" width=\"921\" height=\"624\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Homework-Practice-3.3.4-1.png 921w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Homework-Practice-3.3.4-1-300x203.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Homework-Practice-3.3.4-1-768x520.png 768w\" sizes=\"(max-width: 921px) 100vw, 921px\" \/><br \/>\nCheck:<br \/>\n129.3 &#8211; 44.7 = 84.6.<\/p>\n<p><strong>Find the sum. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 5.<br \/>\n123.98 + 47.65 = _____<br \/>\nAnswer:<br \/>\n123.98 + 47.65 = 171.63.<br \/>\n171.63 is close to 172.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51683\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.5\" width=\"127\" height=\"119\" \/><br \/>\nCheck:<br \/>\n171.63 &#8211; 47.65<br \/>\n= 123.98.<\/p>\n<p>Question 6.<br \/>\n427.8 + 13.2 = _____<br \/>\nAnswer:<br \/>\n427.8 + 13.2 = 441.0<br \/>\n441 is close to 441.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51685\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.6\" width=\"187\" height=\"154\" \/><br \/>\nCheck:<br \/>\n441.0 &#8211; 13.2 = 427.8.<\/p>\n<p>Question 7.<br \/>\n<strong>Reasoning<\/strong><br \/>\nYour friend adds 46.7 and 5.4. Without calculating, is the sum greater than or less than 51? Explain.<br \/>\nAnswer:<br \/>\nAnswer is greater than 51 because the Sum of 46.7 + 5.4 = 52.1.<\/p>\n<p>Explanation:<br \/>\nFirst Find the Sum:<br \/>\n46.7 + 5.4 = 52.1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51686\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.3-Add-Decimals-Add-Decimals-Homework-Practice-3.3.7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.3 Add Decimals-Add Decimals Homework &amp; Practice 3.3.7\" width=\"155\" height=\"146\" \/><\/p>\n<p>Question 8.<br \/>\n<strong>Writing<\/strong><br \/>\nExplain why it is important to use place value to line up the numbers when adding decimals.<br \/>\nAnswer:<br \/>\nWhen we add\u00a0whole\u00a0numbers,\u00a0 in the Value\u00a0(cents) column above, you\u00a0line up the numbers\u00a0so that the digits in the ones\u00a0place-value\u00a0column are aligned. In order to keep the\u00a0numbers\u00a0in the proper\u00a0place-value\u00a0column when\u00a0adding decimals,\u00a0align\u00a0the\u00a0decimal points.<\/p>\n<p>Question 9.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou need 10.5 pounds of fruit for a fruit salad. You buy 3.8 pounds of apples and 6.7 pounds of pears. Do you buy enough fruit?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15623\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.3-16.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.3 16\" width=\"199\" height=\"141\" \/><br \/>\nAnswer:<br \/>\nYes, there are enough fruits for a fruit salad.<\/p>\n<p>Explanation:<br \/>\nWeight of fruits for a fruit salad needed = 10.5 pounds<br \/>\nWeight of Apples purchased = 3.8 pounds<br \/>\nWeight of pears purchased = 6.7 pounds<br \/>\nTotal Weight of apples And Pears purchased = Weight of Apples purchased + Weight of pears purchased<br \/>\n= 3.8\u00a0 + 6.7<br \/>\n= 10.5 pounds<br \/>\n=&gt; Compare:<br \/>\nWeight of fruits for a fruit salad needed : Total Weight of apples And Pears purchased<br \/>\n= 10.5 pounds :10.5 pounds<\/p>\n<p>Question 10.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nA scientist has 200.59 grams of mercury. She has 135.23 fewer grams of zinc. How many grams of zinc does she have?<br \/>\nAnswer:<br \/>\nZinc she has is 65.36 grams.<\/p>\n<p>Explanation:<br \/>\nMercury a Scientist has = 200.59 grams<br \/>\nShe has 135.23 fewer grams of zinc<br \/>\n=&gt; Let the Zinc be X<br \/>\n=&gt; X + 135.23 = 200.59<br \/>\n=&gt; X = 200.59 &#8211; 135.23<br \/>\n=&gt; X = 65.36 grams.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the factor pairs for the number.<\/strong><br \/>\nQuestion 11.<br \/>\n24<br \/>\nAnswer:<br \/>\nFactor pairs of 24 :<br \/>\n1 \u00d7 24<br \/>\n2 \u00d7 12<br \/>\n3 \u00d7 8<br \/>\n4 \u00d7 6<\/p>\n<p>Question 12.<br \/>\n36<br \/>\nAnswer:<br \/>\nFactor pairs of 36 :<br \/>\n1 \u00d7 36<br \/>\n2 \u00d7 18<br \/>\n3 \u00d7 12<br \/>\n4 \u00d7 9<br \/>\n6 \u00d7 6<\/p>\n<p>Question 13.<br \/>\n17<br \/>\nAnswer:<br \/>\nFactor pairs of 17 :<br \/>\n1 \u00d7 17<br \/>\n17 is a prime number so it has 1 and itself as factors.<\/p>\n<h3><a id=\"Lesson_3.4_Subtract_Decimals\"><\/a>Lesson 3.4 Subtract Decimals<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Find the difference.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15624\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-1.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 1\" width=\"159\" height=\"83\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15625\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-2.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 2\" width=\"64\" height=\"86\" \/><br \/>\nUse a model to find the difference. Draw your model.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15626\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-3.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 3\" width=\"74\" height=\"81\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51763\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals\" width=\"192\" height=\"181\" \/><img loading=\"lazy\" class=\"alignnone size-full wp-image-51764\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals..\" width=\"176\" height=\"172\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51770\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-\" width=\"611\" height=\"345\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-.png 611w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals--300x169.png 300w\" sizes=\"(max-width: 611px) 100vw, 611px\" \/><\/p>\n<p><strong>Construct Arguments<\/strong><br \/>\nHow is subtracting decimals similar to subtracting whole numbers?<br \/>\nAnswer:<br \/>\nSubtracting decimals is similar to subtracting whole numbers because the process is same for both kind of numbers that is subtracting.<\/p>\n<p><strong>Think and Grow: Subtract Decimals<\/strong><\/p>\n<p>To subtract decimals, subtract like place values.<\/p>\n<p><strong>Example<\/strong><br \/>\nSubtract: 18.93 &#8211; 7.66.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15627\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-4.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 4\" width=\"675\" height=\"543\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-4.png 675w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-4-300x241.png 300w\" sizes=\"(max-width: 675px) 100vw, 675px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Find the difference. Then check your answer.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15628\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-5.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 5\" width=\"74\" height=\"72\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51775\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow1...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow1..\" width=\"168\" height=\"151\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51773\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow1\" width=\"877\" height=\"534\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow1.png 877w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow1-300x183.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow1-768x468.png 768w\" sizes=\"(max-width: 877px) 100vw, 877px\" \/><\/p>\n<p>Check:<br \/>\n36.3 + 35.3 = 71.6<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15629\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-6.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 6\" width=\"72\" height=\"69\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51780\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow2...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow2..\" width=\"171\" height=\"154\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51779\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow2\" width=\"819\" height=\"522\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow2.png 819w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow2-300x191.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow2-768x489.png 768w\" sizes=\"(max-width: 819px) 100vw, 819px\" \/><br \/>\nCheck:<br \/>\n52.43 + 10.65 = 63.08.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15630\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-7.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 7\" width=\"71\" height=\"83\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51784\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow3...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow3..\" width=\"163\" height=\"138\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51782\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Show and Grow3\" width=\"861\" height=\"511\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow3.png 861w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow3-300x178.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Show-and-Grow3-768x456.png 768w\" sizes=\"(max-width: 861px) 100vw, 861px\" \/><br \/>\nCheck:<br \/>\n15.56 + 9.19 = 24.75.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Find the difference. Then check your answer.<\/strong><br \/>\nQuestion 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15631\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-8.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 8\" width=\"73\" height=\"82\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51789\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice4...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice4..\" width=\"188\" height=\"165\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51788\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice4\" width=\"839\" height=\"496\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice4.png 839w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice4-300x177.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice4-768x454.png 768w\" sizes=\"(max-width: 839px) 100vw, 839px\" \/><br \/>\nCheck:<br \/>\n5.7 + 1.8 = 7.5.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15632\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-9.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 9\" width=\"73\" height=\"65\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51792\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice5...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice5..\" width=\"155\" height=\"124\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51791\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice5\" width=\"703\" height=\"512\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice5.png 703w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice5-300x218.png 300w\" sizes=\"(max-width: 703px) 100vw, 703px\" \/><br \/>\nCheck:<br \/>\n2.81 + 81.11 = 83.92.<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15633\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-10.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 10\" width=\"70\" height=\"72\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51803\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice6...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice6..\" width=\"175\" height=\"151\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51802\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice6\" width=\"854\" height=\"507\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice6.png 854w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice6-300x178.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice6-768x456.png 768w\" sizes=\"(max-width: 854px) 100vw, 854px\" \/><br \/>\nCheck:<br \/>\n8.9 + 5.7 = 14.6.<\/p>\n<p>Question 7.<br \/>\n856.02 &#8211; 48.12 = _______<br \/>\nAnswer:<br \/>\n856.02 &#8211; 48.12 = 807.90.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51805\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice7\" width=\"858\" height=\"530\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice7.png 858w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice7-300x185.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice7-768x474.png 768w\" sizes=\"(max-width: 858px) 100vw, 858px\" \/><br \/>\nCheck:<br \/>\n48.12 + 807.90 = 856.02.<\/p>\n<p>Question 8.<br \/>\n3.76 &#8211; 0.53 = _____<br \/>\nAnswer:<br \/>\n3.76 &#8211; 0.53 = 3.23.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51806\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice8.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice8\" width=\"786\" height=\"523\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice8.png 786w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice8-300x200.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice8-768x511.png 768w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><br \/>\nCheck:<br \/>\n0.53 + 3.23 = 3.76.<\/p>\n<p>Question 9.<br \/>\n27.5 &#8211; 21.7 = ______<br \/>\nAnswer:<br \/>\n27.5 &#8211; 21.7 = 5.8.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51808\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice9\" width=\"859\" height=\"518\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice9.png 859w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice9-300x181.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice9-768x463.png 768w\" sizes=\"(max-width: 859px) 100vw, 859px\" \/><br \/>\nCheck:<br \/>\n21.7 + 5.8 = 27.5.<\/p>\n<p>Question 10.<br \/>\n737.2 &#8211; 2.8 = _____<br \/>\nAnswer:<br \/>\n737.2 &#8211; 2.8 = 734.4.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51809\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice10.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Apply and Grow-Practice10\" width=\"851\" height=\"488\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice10.png 851w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice10-300x172.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Apply-and-Grow-Practice10-768x440.png 768w\" sizes=\"(max-width: 851px) 100vw, 851px\" \/><br \/>\nCheck:<br \/>\n2.8 + 734.4 = 737.2.<\/p>\n<p>Question 11.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nYour friend finds 534.8 &#8211; 23.9. Is your friend correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15634\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-11.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 11\" width=\"86\" height=\"85\" \/><br \/>\nAnswer:<br \/>\nMy Friend&#8217;s answer is incorrect because he misplaced the digits and then did their difference.<\/p>\n<p>Explanation:<br \/>\nFirst find the Difference:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51687\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Add-Decimals-YOU-BE-THE-TEACHER11.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Add Decimals-YOU BE THE TEACHER11\" width=\"193\" height=\"188\" \/><\/p>\n<p>Question 12.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nFind y.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15635\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-12.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 12\" width=\"280\" height=\"154\" \/><br \/>\nAnswer:<br \/>\ny = 2.2<\/p>\n<p>Explanation:<br \/>\nd + 26.4 = 38.7<br \/>\n=&gt; d = 38.7 &#8211; 26.4<br \/>\n=&gt; d = 12.3<br \/>\nd = y + 10.1<br \/>\nSubstitute d = 12.3 in d = y + 10.1<br \/>\n=&gt; d = y + 10.1<br \/>\n=&gt; 12.3 = y + 10.1<br \/>\n=&gt; y = 12.3 &#8211; 10.1<br \/>\n=&gt; y = 2.2<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nThe world record for the longest dog tongue is 18.58 centimeters. The previous record was 11.43 centimeters. By how many centimeters was the record broken?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15636\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-13.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 13\" width=\"224\" height=\"181\" \/><br \/>\nSubtract the previous record,11.43 centimeters, from the current record,18.58 centimeters.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15637\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-14.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 14\" width=\"77\" height=\"76\" \/><br \/>\nSo, the record was broken by ________ centimeters.<\/p>\n<p>Answer:<br \/>\nLength of the record was broken by 7.15 centimeters.<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-14.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 14\" \/><\/p>\n<p>Explanation:<br \/>\nLength of world record for the longest dog tongue = 18.58 centimeters<br \/>\nLength of previous world record for the longest dog tongue = 11.43 centimeters<br \/>\nLength of the record was broken = Length of world record for the longest dog tongue &#8211; Length of previous world record for the longest dog tongue<br \/>\n= 18.58 centimeters &#8211; 11.43 centimeters<br \/>\n= 7.15 centimeters.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 13.<br \/>\nThe average high summer temperature in Death Valley, California, is 46.7 degrees Celsius. The hottest temperature ever recorded is 56.7 degrees Celsius. How much greater is the hottest recorded temperature than the average high temperature?<br \/>\nAnswer:<br \/>\nThe hottest recorded temperature is greater by 10 degrees Celsius than the average high temperature.<\/p>\n<p>Explanation:<br \/>\nThe average high summer temperature in Death Valley, California = 46.7 degrees Celsius<br \/>\nThe hottest temperature ever recorded = 56.7 degrees Celsius.<br \/>\nDifference:<br \/>\n=The hottest temperature ever recorded\u00a0 &#8211; The average high summer temperature in Death Valley, California<br \/>\n= 56.7 &#8211; 46.7<br \/>\n= 10 degrees Celsius<\/p>\n<p>Question 14.<br \/>\nAn athlete\u2019s fitness tracker reads 2.69 miles at noon. The figure shows the athlete\u2019s fitness tracker before going to sleep that night. How many miles were recorded after noon?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15638\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-15.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 15\" width=\"101\" height=\"176\" \/><br \/>\nAnswer:<br \/>\nReading of an athlete\u2019s fitness tracker recorded after noon = 3.65 miles.<\/p>\n<p>Explanation:<br \/>\nReading of an athlete\u2019s fitness tracker\u00a0 at noon = 2.69 miles<br \/>\nReading of an athlete\u2019s fitness tracker before going to sleep=6.34 miles<br \/>\nReading of an athlete\u2019s fitness tracker recorded after noon = Reading of an athlete\u2019s fitness tracker before going to sleep &#8211; Reading of an athlete\u2019s fitness tracker\u00a0 at noon<br \/>\n= 6.34 &#8211; 2.69<br \/>\n= 3.65 miles.<\/p>\n<p>Question 15.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYour friend is using a pattern to knit a 139.7-centimeter-long scarf. He has already knitted 61.8 centimeters. How many centimeters of scarf does he have left to knit? Write your answer as a mixed number.<br \/>\nAnswer:<br \/>\nLength of scarf\u00a0 left to knit = 77.9\/100 centimeters<\/p>\n<p>Explanation:<br \/>\nLength of long scarf pattern to knit = 139.7 centimeter<br \/>\nLength of scarf already knitted = 61.8 centimeters<br \/>\nLength of scarf\u00a0 left to knit = Length of long scarf pattern to knit &#8211; Length of scarf already knitted<br \/>\n= 139.7 centimeter &#8211; 61.8 centimeters<br \/>\n= 77.9 centimeters<\/p>\n<h3><a id=\"Subtract_Decimals_Homework_&amp;_Practice_3.4\"><\/a>Subtract Decimals Homework &amp; Practice 3.4<\/h3>\n<p><strong>Find the difference. Then check your answer.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15639\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-16.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 16\" width=\"57\" height=\"67\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51871\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4.1\" width=\"138\" height=\"118\" \/><br \/>\nCheck:<br \/>\n21.5 + 13.0<br \/>\n= 34.5.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15640\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-17.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 17\" width=\"87\" height=\"74\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51872\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4.2\" width=\"213\" height=\"169\" \/><br \/>\nCheck:<br \/>\n38.51 + 958.23<br \/>\n= 996.74.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15641\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-18.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 18\" width=\"70\" height=\"67\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51873\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4.3\" width=\"212\" height=\"141\" \/><br \/>\nCheck:<br \/>\n3.8 + 19.7<br \/>\n= 23.5.<\/p>\n<p><strong>Find the difference. Then check your answer.<\/strong><br \/>\nQuestion 4.<br \/>\n856.02 &#8211; 48.12 = ______<br \/>\nAnswer:<br \/>\n856.02 &#8211; 48.12<br \/>\n= 807.90<br \/>\nCheck:<br \/>\n48.12 + 807.90<br \/>\n= 856.02<\/p>\n<p>Question 5.<br \/>\n3.76 &#8211; 0.53 = ______<br \/>\nAnswer:<br \/>\n3.76 &#8211; 0.53<br \/>\n= 3.23<br \/>\nCheck:<br \/>\n0.53 + 3.23<br \/>\n= 3.76.<\/p>\n<p>Question 6.<br \/>\n27.5 &#8211; 21.7 = ______<br \/>\nAnswer:<br \/>\n27.5 &#8211; 21.7<br \/>\n= 5.8<br \/>\nCheck:<br \/>\n21.7 + 5.8<br \/>\n= 27.5.<\/p>\n<p>Question 7.<br \/>\n737.2 &#8211; 2.8 = _______<br \/>\nAnswer:<br \/>\n737.2 &#8211; 2.8<br \/>\n= 734.4.<br \/>\nCheck:<br \/>\n2.8 + 734.4<br \/>\n= 737.2.<\/p>\n<p>Question 8.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWhich statements describe the difference of 134.6 and 78.9?<br \/>\nThe difference is 55.7.<br \/>\nThe difference is greater than 55.<br \/>\nThe difference is less than 55.07.<br \/>\nAnswer:<br \/>\nThe difference is 55.7 is the correct statement.<\/p>\n<p>Explanation:<br \/>\nFirst find the Difference:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51874\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4-Number-Sense.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4-Number Sense\" width=\"298\" height=\"220\" \/><br \/>\nThe difference is 55.7.<br \/>\nThe difference is greater than 55.<br \/>\nThe difference is less than 55.07.<\/p>\n<p>Question 9.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nFind the missing digits.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15642\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.4-19.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3.4 19\" width=\"114\" height=\"103\" \/><br \/>\nAnswer:<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4-DIG-DEEPER-9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4-DIG DEEPER-9\" \/><br \/>\nExplanation:<br \/>\nMissing digit in tenths place:<br \/>\nAdd tenths place 3 + 8 =11, =&gt; 1<br \/>\nSubtract the tenths digits and ones digits to get the missing digit in tens place.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-51875\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.4-Subtract-Decimals-Subtract-Decimals-Homework-Practice-3.4-DIG-DEEPER-9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.4 Subtract Decimals-Subtract Decimals Homework &amp; Practice 3.4-DIG DEEPER-9\" width=\"271\" height=\"217\" \/><\/p>\n<p>Question 10.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThe world record for the longest fingernails on a pair of female hands is 576.41 centimeters. The world record for the longest fingernails on a single hand is 909.60 centimeters. How much longer is the world record for the longest fingernails on a single hand than the world record for the longest fingernails on a pair of female hands?<br \/>\nAnswer:<br \/>\nThe world record for the longest fingernails on a single hand is 333.19 centimeters longer than the world record for the longest fingernails on a pair of female hands.<\/p>\n<p>Explanation:<br \/>\nLength of the world record for the longest fingernails on a pair of female hands = 576.41 centimeters.<br \/>\nLength of the world record for the longest fingernails on a single hand = 909.60 centimeters.<br \/>\nDifference:<br \/>\nLength of the world record for the longest fingernails on a single hand &#8211; Length of the world record for the longest fingernails on a pair of female hands<br \/>\n= 909.60 &#8211; \u00a0576.41<br \/>\n= 333.19 centimeters.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the product.<\/strong><br \/>\nQuestion 11.<br \/>\n80 \u00d7 10 = ______<br \/>\nAnswer:<br \/>\nMultiplication:<br \/>\n80 \u00d7 10 = 800.<\/p>\n<p>Question 12.<br \/>\n30 \u00d7 90 = _______<br \/>\nAnswer:<br \/>\nMultiplication:<br \/>\n30 \u00d7 90 = 2700.<\/p>\n<p>Question 13.<br \/>\n60 \u00d7 70 = _______<br \/>\nAnswer:<br \/>\nMultiplication:<br \/>\n60 \u00d7 70 = 4200.<\/p>\n<h3><a id=\"Lesson_3.5_Add_and_Subtract_Decimals\"><\/a>Lesson 3.5 Add and Subtract Decimals<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Add the decimals.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15644\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-1.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 1\" width=\"367\" height=\"202\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-1.png 367w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-1-300x165.png 300w\" sizes=\"(max-width: 367px) 100vw, 367px\" \/><br \/>\nAnswer:<br \/>\n1.36 + 2.5 + 2.78<br \/>\n= 3.86 + 2.78<br \/>\n= 6.64.<\/p>\n<p>Explanation:<br \/>\nCount the given values:<br \/>\n1.36 + 2.5 + 2.78 = ???<br \/>\nAdd the decimal values:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51876\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals\" width=\"710\" height=\"409\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals.png 710w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-300x173.png 300w\" sizes=\"(max-width: 710px) 100vw, 710px\" \/><\/p>\n<p><strong>Reasoning<\/strong><br \/>\nHow did you find the sum? What other ways can you find the sum?<br \/>\nAnswer:<br \/>\nFirst count the figures given place values and later add the decimals values.<br \/>\nOther ways are like counting total figures n doing the addition of them.<\/p>\n<p><strong>Think and Grow: Add and Subtract Decimals<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nAdd: 7.39 + 4.16 + 9. Estimate ________<br \/>\nUse place value to line up the addends. Add the hundredths, then the tenths, and then the ones.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15645\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-2.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 2\" width=\"579\" height=\"247\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-2.png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-2-300x128.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/p>\n<p>Answer:<br \/>\n7.39 + 4.16 + 9.00 = 20.55.<br \/>\n20.55 is close to 21.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51877\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Think-and-Grow-Add-and-Subtract-Decimals.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Think and Grow-Add and Subtract Decimals\" width=\"101\" height=\"138\" \/><\/p>\n<p><strong>Example<\/strong><br \/>\nFind 18.46 + 13.31 &#8211; 5.6. Estimate _______<br \/>\nUse order of operations.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15646\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-3.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 3\" width=\"599\" height=\"187\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-3.png 599w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-3-300x94.png 300w\" sizes=\"(max-width: 599px) 100vw, 599px\" \/><br \/>\nAnswer:<br \/>\n26.17 is close to 26.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51878\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Think-and-Grow-Add-and-Subtract-Decimals-example.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Think and Grow-Add and Subtract Decimals-example\" width=\"657\" height=\"192\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Think-and-Grow-Add-and-Subtract-Decimals-example.png 657w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Think-and-Grow-Add-and-Subtract-Decimals-example-300x88.png 300w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Evaluate. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 1.<br \/>\n6.84 + 2.9 + 5.22 = ______<br \/>\nAnswer:<br \/>\n6.84 + 2.9 + 5.22 = 14.96<br \/>\n14.96 is close to 15.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51879\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Show and Grow1\" width=\"645\" height=\"179\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow1.png 645w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow1-300x83.png 300w\" sizes=\"(max-width: 645px) 100vw, 645px\" \/><br \/>\nCheck:<br \/>\n14.96 &#8211; 5.22 &#8211; 2.9<br \/>\n= 9.74 &#8211; 2.9<br \/>\n=6.84.<\/p>\n<p>Question 2.<br \/>\n41.55 &#8211; 14.09 + 42.4 = ______<br \/>\nAnswer:<br \/>\n41.55 &#8211; 14.09 + 42.4 = 69.86.<br \/>\n69.86 is close to 70.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51880\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Show and Grow2\" width=\"631\" height=\"178\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow2.png 631w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Show-and-Grow2-300x85.png 300w\" sizes=\"(max-width: 631px) 100vw, 631px\" \/><br \/>\nCheck:<br \/>\n69.86 &#8211; 42.4 + 14.09<br \/>\n= 27.46 + 14.09<br \/>\n= 41.55.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Evaluate. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 3.<br \/>\n5.3 &#8211; 1.7 &#8211; 2 = _____<br \/>\nAnswer:<br \/>\n5.3 &#8211; 1.7 &#8211; 2 = 3.6 &#8211; 2 = 1.6<br \/>\n1.6 is close to 2.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51885\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Apply and Grow-Practice3\" width=\"620\" height=\"164\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice3.png 620w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice3-300x79.png 300w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><br \/>\nCheck:<br \/>\n1.6 + 2 + 1.7<br \/>\n= 3.6 + 1.7<br \/>\n= 5.3.<\/p>\n<p>Question 4.<br \/>\n14.08 + 6.15 &#8211; 9.3 = ______<br \/>\nAnswer:<br \/>\n14.08 + 6.15 &#8211; 9.3 = 10.93<br \/>\n10.93 is close to 11.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51886\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Apply and Grow-Practice4\" width=\"648\" height=\"179\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice4.png 648w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice4-300x83.png 300w\" sizes=\"(max-width: 648px) 100vw, 648px\" \/><br \/>\nCheck:<br \/>\n10.93 + 9.3 &#8211; 6.15<br \/>\n= 20.23 &#8211; 6.15<br \/>\n= 14.08.<\/p>\n<p>Question 5.<br \/>\n24.7 &#8211; 5.1 + 3.75 = _____<br \/>\nAnswer:<br \/>\n24.7 &#8211; 5.1 + 3.75 = 19.6 + 3.75 = 23.35<br \/>\n23.35 is close to 23.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51887\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Apply and Grow-Practice5\" width=\"639\" height=\"177\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice5.png 639w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice5-300x83.png 300w\" sizes=\"(max-width: 639px) 100vw, 639px\" \/><br \/>\nCheck:<br \/>\n23.35 &#8211; 3.75 + 5.1<br \/>\n= 19.6 + 5.1<br \/>\n= 24.7.<\/p>\n<p>Question 6.<br \/>\n32.6 + 6 + 15.1 = ______<br \/>\nAnswer:<br \/>\n32.6 + 6 + 15.1 = 38.6 + 15.1 = 53.7.<br \/>\n53.7 is close to 54.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51892\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice6-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Apply and Grow-Practice6\" width=\"621\" height=\"173\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice6-1.png 621w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Apply-and-Grow-Practice6-1-300x84.png 300w\" sizes=\"(max-width: 621px) 100vw, 621px\" \/><br \/>\nCheck:<br \/>\n53.7 &#8211; 15.1 &#8211; 6<br \/>\n= 38.6 &#8211; 6<br \/>\n= 32.6<\/p>\n<p>&nbsp;<\/p>\n<p>Question 7.<br \/>\nYou have $35.50. You buy a movie for $15.89 and music for $12.50. How much money do you have left?<br \/>\nAnswer:<br \/>\nAmount left with me = $7.11.<\/p>\n<p>Explanation:<br \/>\nTotal money I have = $35.50<br \/>\nCost of movie purchased = $15.89<br \/>\nCost of music purchased = $12.50<br \/>\nTotal amount spent on music and movie = $15.89 + $12.50 = $28.39<br \/>\nAmount left with me = Total money I have &#8211; Total amount spent on music and movie<br \/>\n= $35.50 &#8211; $28.39<br \/>\n= $7.11<\/p>\n<p>Question 8.<br \/>\nYou ride your bike each day over the weekend. How far do you ride your bike altogether?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15647\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-4.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 4\" width=\"168\" height=\"153\" \/><br \/>\nAnswer:<br \/>\nTotal Distance covered over all travelled on bike = 7.55 miles.<\/p>\n<p>Explanation:<br \/>\nDistance covered on Friday = 1.6 miles<br \/>\nDistance covered on Saturday = 2.85 miles<br \/>\nDistance covered on Sunday = 3.1 miles<br \/>\nTotal Distance covered over all = Distance covered on Friday+ Distance covered on Saturday + Distance covered on Sunday<br \/>\n= 1.6 + 2.85 + 3.1<br \/>\n= 4.45 + 3.1<br \/>\n= 7.55 miles.<\/p>\n<p>Question 9.<br \/>\n<strong>Logic<\/strong><br \/>\nYour friend finds 5.31 + 2.8 &#8211; 1.27 and gets the answer 4.32. Is your friend\u2019s answer reasonable? Explain.<br \/>\nAnswer:<br \/>\nMy friend answer is incorrect because the correct answer is 7 not 4.32.<\/p>\n<p>Explanation:<br \/>\nFirst do the adding the equation:<br \/>\n5.31 + 2.8 &#8211; 1.27<br \/>\n= 8.11 &#8211; 1.27<br \/>\n= 6.84<br \/>\n6.84 is close to 7.<\/p>\n<p>Question 10.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nFind the missing digits.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15648\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-5.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 5\" width=\"136\" height=\"126\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51884\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-DIG-DEEPER-10.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-DIG DEEPER-10\" width=\"256\" height=\"210\" \/><br \/>\nExplanation:<br \/>\nFirst add hundredths place then tenths values.<br \/>\nSecondly add ones and tens values checking the sum and numbers given for adding.<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-DIG-DEEPER-10.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-DIG DEEPER-10\" \/><\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nA lifeguard walks around the perimeter of the lazy river ride. How far does the lifeguard walk?<br \/>\nFind the perimeter of the lazy river by adding all of the side lengths.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15649\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-6.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 6\" width=\"460\" height=\"197\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-6.png 460w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-6-300x128.png 300w\" sizes=\"(max-width: 460px) 100vw, 460px\" \/><br \/>\nThe lifeguard walks _______ feet.<br \/>\nAnswer:<br \/>\nThe lifeguard walks\u00a0 637.50 feet.<\/p>\n<p>Explanation:<br \/>\nLength of the side of the river = 216.75 feet<br \/>\nLength of the side of the river = 216.75 feet<br \/>\nLength of the base of the river = 204 feet<br \/>\nPerimeter\u00a0 of the river = Length of the side of the river + Length of the side of the river + Length of the base of the river<br \/>\n= 216.75 + 216.75\u00a0 + 204<br \/>\n= 433.50 + 204<br \/>\n= 637.50 feet.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 11.<br \/>\nYou ride your skateboard around the perimeter of the park. How far do you ride your skateboard?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15650\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-7.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 7\" width=\"234\" height=\"165\" \/><br \/>\nAnswer:<br \/>\nPerimeter of the park = 184.8 m<\/p>\n<p>Explanation:<br \/>\nLength of side of the park = 67.2 m<br \/>\nLength of the base of the park = 39.6 m<br \/>\nLength of the Height of the park = 78 m<br \/>\nPerimeter of the park = Length of side of the park + Length of the base of the park + Length of the Height of the park<br \/>\n= 67.2 + 39.6 + 78<br \/>\n= 106.8 + 78<br \/>\n= 184.8 m<\/p>\n<p>Question 12.<br \/>\nA German shepherd weighs 24.75 pounds less than the Bernese mountain dog. A husky weighs 21.67 pounds less than the German shepherd. How much does the husky weigh?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15651\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-8.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 8\" width=\"151\" height=\"181\" \/><br \/>\nAnswer:<br \/>\nWeight of Husky dog = 56.91 lb.<\/p>\n<p>Explanation:<br \/>\nWeight of Bernese mountain dog = 103.33 lb.<br \/>\nA German shepherd weighs 24.75 pounds less than the Bernese mountain dog.<br \/>\n=&gt; 103.33 &#8211; 24.75<br \/>\n=.&gt; 78.58 lb.<br \/>\nA husky weighs 21.67 pounds less than the German shepherd.<br \/>\n=&gt; 78.58 &#8211; 21.67<br \/>\n=&gt; 56.91 lb.<\/p>\n<p>Question 13.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYour friend launches a water balloon 136.33 yards. Your cousin launches a balloon 15.67 yards farther than your friend and 8.33 yards farther than you. How much farther do you launch a balloon than your friend?<br \/>\nAnswer:<br \/>\nI have launched 24 yards a balloon farther than my friend.<\/p>\n<p>Explanation:<br \/>\nLength of my friend a water balloon = 136.33 yards<br \/>\nYour cousin launches a balloon 15.67 yards farther than your friend and 8.33 yards farther than you.<br \/>\n=&gt;\u00a0 136.33 + 15.67 = 152 + 8.33 = 160.33 yards<br \/>\nDifference:<br \/>\nYour cousin launches a balloon 15.67 yards farther than your friend and 8.33 yards farther than you &#8211; Length of my friend a water balloon<br \/>\n= 160.33 &#8211; 136.33<br \/>\n= 24 yards<\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_Homework_&amp;_Practice_3.5\"><\/a>Add and Subtract Decimals Homework &amp; Practice 3.5<\/h3>\n<p><strong>Evaluate. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 1.<br \/>\n2.8 + 7 + 5.3 = _______<br \/>\nAnswer:<br \/>\n2.8 + 7 + 5.3 = 9.8 + 5.3 = 15.1.<br \/>\n15.1 is close to 15.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51893\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.1\" width=\"643\" height=\"182\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.1.png 643w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.1-300x85.png 300w\" sizes=\"(max-width: 643px) 100vw, 643px\" \/><br \/>\nCheck:<br \/>\n15.1 &#8211; 5.3 &#8211; 7<br \/>\n= 9.8 &#8211; 7<br \/>\n= 2.8.<\/p>\n<p>Question 2.<br \/>\n14.86 + 5.72 &#8211; 3 = ______<br \/>\nAnswer:<br \/>\n14.86 + 5.72 &#8211; 3 = 20.58 &#8211; 3 = 17.58.<br \/>\n17.58 is close to 18.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51894\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.2\" width=\"644\" height=\"178\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.2.png 644w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.2-300x83.png 300w\" sizes=\"(max-width: 644px) 100vw, 644px\" \/><br \/>\nCheck:<br \/>\n17.58 + 3 &#8211; 5.72<br \/>\n= 20.58 &#8211; 5.72<br \/>\n= 14.86.<\/p>\n<p>Question 3.<br \/>\n28.95 &#8211; 4.12 &#8211; 0.7 = ______<br \/>\nAnswer:<br \/>\n28.95 &#8211; 4.12 &#8211; 0.7 = 24.83 &#8211; 0.7 = 24.13.<br \/>\n24.13 is close to 24.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51895\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.3\" width=\"635\" height=\"169\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.3.png 635w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.3-300x80.png 300w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/><br \/>\nCheck:<br \/>\n24.13 + 0.7 + 4.12<br \/>\n= 24.83 + 4.12<br \/>\n= 28.95.<\/p>\n<p>Question 4.<br \/>\n10.6 &#8211; 10.35 + 34.27 = _____<br \/>\nAnswer:<br \/>\n10.6 &#8211; 10.35 + 34.27 = 0.25 + 34.27 = 34.52.<br \/>\n34.52 is close to 35.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51896\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.4\" width=\"637\" height=\"176\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.4.png 637w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.4-300x83.png 300w\" sizes=\"(max-width: 637px) 100vw, 637px\" \/><br \/>\nCheck:<br \/>\n34.52 &#8211; 34.27 + 10.35<br \/>\n= 0.25 + 10.35<br \/>\n= 10.60.<\/p>\n<p>Question 5.<br \/>\n19.36 + 24 + 8.5 = ______<br \/>\nAnswer:<br \/>\n19.36 + 24 + 8.5 = 43.36 + 8.5 = 51.86.<br \/>\n51.86 is close to 52.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51897\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.5.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.5\" width=\"642\" height=\"172\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.5.png 642w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.5-300x80.png 300w\" sizes=\"(max-width: 642px) 100vw, 642px\" \/><br \/>\ncheck:<br \/>\n51.86 &#8211; 8.5 -24<br \/>\n= 43.36 &#8211; 24<br \/>\n= 19.36.<\/p>\n<p>Question 6.<br \/>\n5 &#8211; 0.2 &#8211; 1.37 = ______<br \/>\nAnswer:<br \/>\n5 &#8211; 0.2 &#8211; 1.37 = 4.8 &#8211; 1.37 = 3.43.<br \/>\n3.43 is close to 3.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51898\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Add and Subtract Decimals Homework &amp; Practice 3.5.6\" width=\"627\" height=\"151\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.6.png 627w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Add-and-Subtract-Decimals-Homework-Practice-3.5.6-300x72.png 300w\" sizes=\"(max-width: 627px) 100vw, 627px\" \/><br \/>\nCheck:<br \/>\n3.43 + 1.37 + 0.2<br \/>\n= 4.8 + 0.2<br \/>\n= 5.<\/p>\n<p>Question 7.<br \/>\n<strong>Which One Doesn\u2019t Belong?<\/strong><br \/>\nWhich addition problem does not involve adding zeros to line up the place values?<br \/>\n5.39 + 1.76 + 40.9<br \/>\n25 + 1.8 + 6.3<br \/>\n18.5 + 6.2 + 0.7<br \/>\n12.49 + 10.8 + 0.13<br \/>\nAnswer:<br \/>\nThe equations 25 + 1.8 + 6.3, 18.5 + 6.2 + 0.7 and 12.49 + 10.8 + 0.13 does not involve adding of zeros to line up the place values.<\/p>\n<p>Explanation:<br \/>\nFirst, find the sum:<br \/>\n5.39 + 1.76 + 40.9 = 7.15 + 40.9 = 48.05<br \/>\n25 + 1.8 + 6.3 = 26.8 + 6.3 =\u00a0 33.1<br \/>\n18.5 + 6.2 + 0.7 = 24.7 + 0.7 = 25.4<br \/>\n12.49 + 10.8 + 0.13 = 23.29 + 0.13 = 23.42<\/p>\n<p>Question 8.<br \/>\n<strong>Logic<\/strong><br \/>\nWhich expressions have an estimate greater than 10?<br \/>\n4.9 + 2.5 + 3.8<br \/>\n8.1 &#8211; 4.3 + 2.7<br \/>\n10.9 &#8211; 0.2 &#8211; 0.1<br \/>\n10.8 + 3.6 &#8211; 5.2<br \/>\nAnswer:<br \/>\nThe Equation 4.9 + 2.5 + 3.8 and 10.9 &#8211; 0.2 &#8211; 0.1 have an estimate greater than 10.<\/p>\n<p>Explanation:<br \/>\nFirst, add and subtract the equation:<br \/>\n4.9 + 2.5 + 3.8 = 7.4 + 3.8 = 11.2<br \/>\n8.1 &#8211; 4.3 + 2.7 = 3.8 + 2.7 = 6.5<br \/>\n10.9 &#8211; 0.2 &#8211; 0.1 = 10.7 &#8211; 0.1 =10.6<br \/>\n10.8 + 3.6 &#8211; 5.2 = 14.4 &#8211; 5.2 = 9.2<\/p>\n<p>Question 9.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou run across the length of the soccer field until you reach the middle, and then run back. Then you run across the entire length of the field. How far do you run altogether?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15652\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-9.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 9\" width=\"220\" height=\"208\" \/><br \/>\nAnswer:<br \/>\nLength of the total run altogether = 137.16 m.<\/p>\n<p>Explanation:<br \/>\nLength of the entire soccer field = 91.44 m<br \/>\nLength of the half soccer field = 45.72 m<br \/>\nLength of the total run altogether = Length of the entire soccer field + Length of the half soccer field<br \/>\n= 91.44\u00a0 + 45.72<br \/>\n= 137.16 m<\/p>\n<p>Question 10.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nThree pumpkins are catapulted at a contest. How much farther does Pumpkin C travel than Pumpkin A?<br \/>\n\u2022 Pumpkin A travels 0.61 mile.<br \/>\n\u2022 Pumpkin B travels 0.28 mile farther than Pumpkin A.<br \/>\n\u2022 Pumpkin C travels 0.06 mile farther than Pumpkin B.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15653\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-10.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 10\" width=\"167\" height=\"169\" \/><br \/>\nAnswer:<br \/>\nPumpkin C travel 0.34 miles longer than Pumpkin A.<\/p>\n<p>Explanation:<br \/>\nPumpkin A travels= 0.61 mile.<br \/>\nPumpkin B travels 0.28 mile farther than Pumpkin A.<br \/>\n=&gt; 0.61 + 0.28 = 0.89 miles<br \/>\nPumpkin C travels 0.06 mile farther than Pumpkin B.<br \/>\n=&gt; 0.89 + 0.06 = 0.95 miles<br \/>\nDifference between the Pumpkin C and Pumpkin A= Pumpkin C travels &#8211; Pumpkin A travels<br \/>\n= 0.95 &#8211; 0.61<br \/>\n= 0.34 miles<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Determine whether the shape has line symmetry. Draw each line of symmetry.<\/strong><br \/>\nQuestion 11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15654\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-11.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 11\" width=\"88\" height=\"105\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51881\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Review-Refresh-11.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Review &amp; Refresh-11\" width=\"203\" height=\"167\" \/><\/p>\n<p>Explanation:<br \/>\nNo, there is no line symmetry in the given shape.<\/p>\n<p>Question 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15655\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-12.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 12\" width=\"133\" height=\"98\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51882\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Review-Refresh-12.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Review &amp; Refresh-12\" width=\"252\" height=\"195\" \/><\/p>\n<p>Explanation:<br \/>\nNo, there is no line symmetry in the given shape.<\/p>\n<p>Question 13.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15656\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answer-Key-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.5-13.png\" alt=\"Big Ideas Math Answer Key Grade 5 Chapter 3 Add and Subtract Decimals 3.5 13\" width=\"113\" height=\"107\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51883\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Review-Refresh-13.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Review &amp; Refresh-13\" width=\"224\" height=\"202\" \/><\/p>\n<p>Explanation:<br \/>\nNo, there is no line symmetry in the given shape.<\/p>\n<h3><a id=\"Lesson_3.6_Use_Mental_Maths_to_Add_or_Subtract_Decimals\"><\/a>Lesson 3.6 Use Mental Maths to Add or Subtract Decimals<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use mental math to find each sum.<br \/>\n6.5 + 3.1 + 3.5 = ______<br \/>\n10. 79 + 6.25 = ______<br \/>\nAnswer:<br \/>\n6.5 + 3.1 + 3.5 = 13.1.<br \/>\n10. 79 + 6.25 = 17.04.<\/p>\n<p>Explanation:<br \/>\nGiven 6.5 + 3.1 + 3.5,<br \/>\n6.5 and 3.5 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n6.5 + 3.1 + 3.5 = 3.1 + (6.5 + 3.5) Associative Property<br \/>\n= 3.1 + 10<br \/>\n= 13.1<\/p>\n<p>10. 79 + 6.25 = 17.04.<\/p>\n<p><strong>Reasoning<\/strong><br \/>\nExplain how you used mental math to find each.<br \/>\nAnswer:<br \/>\nFor the first one, I have rearranged the numbers\u00a0 to add compatibles numbers first. Later used Associative Property to add them.<br \/>\nSecond equation directly I have added the given numbers.<\/p>\n<p><strong>Think and Grow: Use mental math to Add or Subtract Decimals<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nfind 12.4 + 3.9 + 7.6.<br \/>\nNotice that 12.4 and 7.6 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n12.4 + 3.9 + 7.6 = 3.9 + 12.4 + 7.6 Commutative Property<br \/>\n= 3.9 + (12.4 + 7.6) Associative Property<br \/>\n= 3.9 + 20<br \/>\n= _____<br \/>\nSo, 12.4 + 3.9 + 7.6 = _______.<\/p>\n<p>Answer:<br \/>\nSo, 12.4 + 3.9 + 7.6 = 23.9.<\/p>\n<p>Explanation:<br \/>\nNotice that 12.4 and 7.6 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n12.4 + 3.9 + 7.6 = 3.9 + 12.4 + 7.6 Commutative Property<br \/>\n= 3.9 + (12.4 + 7.6) Associative Property<br \/>\n= 3.9 + 20<br \/>\n= 23.9.<\/p>\n<p><strong>Example<\/strong><br \/>\nUse mental math to find 6.75 &#8211; 4.46.<br \/>\nUse compensation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15657\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-1.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 1\" width=\"231\" height=\"69\" \/><br \/>\nYou subtracted 0.04 more than 4.46, so you must add 0.04 to2.25 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15658\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-2.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 2\" width=\"91\" height=\"88\" \/><br \/>\nSo, 6.75 &#8211; 4.46 = _____.<\/p>\n<p>Answer:<br \/>\nSo, 6.75 &#8211; 4.46 = 2.29.<\/p>\n<p>Explanation:<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-1.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 1\" \/><br \/>\nSubtract 0.04 more than 4.46, so you must add 0.04 to 2.25 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-51901\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson-3.5-Add-and-Subtract-Decimals-Think-and-Grow-Use-mental-math-to-Add-or-Subtract-Decimals-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-Lesson 3.5 Add and Subtract Decimals-Think and Grow-Use mental math to Add or Subtract Decimals\" width=\"81\" height=\"83\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Use mental math to find the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n4.25 + 1.36 + 2.75 = ______<br \/>\nAnswer:<br \/>\n4.25 + 1.36 + 2.75 = 8.36.<\/p>\n<p>Explanation:<br \/>\n4.25 + 1.36 + 2.75 = ????<br \/>\nNotice that 4.25 and 2.75 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n4.25 + 1.36 + 2.75 = 1.36 + 4.25 + 2.75 Commutative Property<br \/>\n= 1.36 + (4.25 + 2.75 )Associative Property<br \/>\n= 1.36 + 7.00<br \/>\n= 8.36<\/p>\n<p>Question 2.<br \/>\n12.78 + 5.25 = _____<br \/>\nAnswer:<br \/>\n12.78 + 5.25 = 18.03.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52087\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow2-2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow2\" width=\"550\" height=\"176\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow2-2.png 550w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow2-2-300x96.png 300w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><br \/>\nAdd 0.05 more than 5.25, so you must subtract 0.05 to 18.08 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52089\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow2..-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow2..\" width=\"192\" height=\"140\" \/><\/p>\n<p>Question 3.<br \/>\n17.4 &#8211; 13.6 = _____<br \/>\nAnswer:<br \/>\n17.4 &#8211; 13.6 = 3.8.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52079\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow3\" width=\"546\" height=\"222\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow3.png 546w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow3-300x122.png 300w\" sizes=\"(max-width: 546px) 100vw, 546px\" \/><br \/>\nSubtract 0.4 more than 13.6, so you must add 0.4 to 3.4 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52081\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow3....png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow3...\" width=\"145\" height=\"157\" \/><\/p>\n<p>Question 4.<br \/>\n29.8 &#8211; 2.27 = _____<br \/>\nAnswer:<br \/>\n29.8 &#8211; 2.27 = 27.53.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52082\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow4\" width=\"523\" height=\"200\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow4.png 523w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow4-300x115.png 300w\" sizes=\"(max-width: 523px) 100vw, 523px\" \/><br \/>\nSubtract 0.03 more than 2.27, so you must add 0.03 to 27.50 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52084\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show-and-Grow4...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Show and Grow4..\" width=\"163\" height=\"145\" \/><\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Use mental math to find the sum or difference.<\/strong><br \/>\nQuestion 5.<br \/>\n1.25 + 2.45 + 1.75 = _____<br \/>\nAnswer:<br \/>\nSo, 1.25 + 2.45 + 1.75 = 5.45.<\/p>\n<p>Explanation:<br \/>\n1.25 + 2.45 + 1.75 = ???<br \/>\nNotice that 1.25 and 1.75 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n1.25 + 2.45 + 1.75 =\u00a0 2.45 + 1.25 + 1.75 Commutative Property<br \/>\n= 2.45 + (1.25 + 1.75) Associative Property<br \/>\n= 2.45 + 3.00<br \/>\n= 5.45.<\/p>\n<p>Question 6.<br \/>\n8.4 + 6.15 + 2.6 = ______<br \/>\nAnswer:<br \/>\nSo, 8.4 + 6.15 + 2.6 = 17.15.<\/p>\n<p>Explanation:<br \/>\n8.4 + 6.15 + 2.6 = ???<br \/>\nNotice that 8.4 and 2.6 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n8.4 + 6.15 + 2.6 = 6.15 + 8.4 + 2.6 Commutative Property<br \/>\n= 6.15 + (8.4 + 2.6)\u00a0 Associative Property<br \/>\n= 6.15 + 11.00<br \/>\n= 17.15<\/p>\n<p>Question 7.<br \/>\n17.82 &#8211; 15.61 = _____<br \/>\nAnswer:<br \/>\n17.82 &#8211; 15.61 = 2.21.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52179\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply and Grow-Practice7\" width=\"765\" height=\"234\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice7.png 765w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice7-300x92.png 300w\" sizes=\"(max-width: 765px) 100vw, 765px\" \/><br \/>\nSubtract 0.09 more than 15.61, so you must add 0.09 to 2.12 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52180\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice7...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply and Grow-Practice7..\" width=\"212\" height=\"176\" \/><\/p>\n<p>Question 8.<br \/>\n35.7 &#8211; 13.8 = _____<br \/>\nAnswer:<br \/>\n35.7 &#8211; 13.8 = 21.9.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52181\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply and Grow-Practice8\" width=\"1046\" height=\"305\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8.png 1046w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8-300x87.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8-1024x299.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8-768x224.png 768w\" sizes=\"(max-width: 1046px) 100vw, 1046px\" \/><br \/>\nSubtract 0.2 more than 13.8, so you must add 0.2 to 21.7 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52182\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply-and-Grow-Practice8...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Apply and Grow-Practice8..\" width=\"203\" height=\"167\" \/><\/p>\n<p>Question 9.<br \/>\nTwo years ago, your friend was1.25 meters tall. Today, your friend is1.48 meters tall. How many meters did your friend grow?<br \/>\nAnswer:<br \/>\nHeight my friend grew = 0.23 meters.<\/p>\n<p>Explanation:<br \/>\nHeight of my Friend two years ago = 1.25 meters<br \/>\nHeight of my Friend today = 1.48 meters<br \/>\nHeight my friend grew = Height of my Friend today &#8211; Height of my Friend two years ago<br \/>\n= 1.48 &#8211; 1.25<br \/>\n= 0.23 meters<\/p>\n<p>Question 10.<br \/>\nClothing items are donated to an organization. How many pounds of clothing are donated altogether?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15659\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-3.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 3\" width=\"283\" height=\"128\" \/><br \/>\nAnswer:<br \/>\nTotal weight of all clothing donated together = 134.8 pounds.<\/p>\n<p>Explanation:<br \/>\nWeight of Shirts donated = 37.4 pounds.<br \/>\nWeight of Pants donated = 54.8 pounds.<br \/>\nWeight of Coats donated = 42.6 pounds.<br \/>\nTotal weight of all clothing donated together = Weight of Shirts donated + Weight of Pants donated + Weight of Coats donated<br \/>\n= 37.4 +\u00a0 54.8 + 42.6<br \/>\n= 134.8 pounds.<\/p>\n<p>Question 11.<br \/>\n<strong>Reasoning<\/strong><br \/>\nCan you use the Commutative Property to find the difference of two decimals? Explain.<br \/>\nAnswer:<br \/>\nYes, we can Commutative Property to find the difference of two decimals because the methodology we doing is subtraction in between the numerals. So, there wont be any difference expect the points.<\/p>\n<p>&nbsp;<\/p>\n<p>Question 12.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nUse each digit from 1 through 8 once to complete the problem.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15660\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-4.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 4\" width=\"134\" height=\"92\" \/><br \/>\nAnswer:<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52183\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-DIG-DEEPER-12.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-DIG DEEPER-12\" width=\"163\" height=\"110\" \/><\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nA city receives 75.5 inches of snowfall and 45.27 inches of rainfall in 1 year. How much more snowfall does the city receive than rainfall?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15661\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-5.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 5\" width=\"229\" height=\"146\" \/><br \/>\nUse compensation to find the difference between the amounts of snowfall and rainfall: 75.5 &#8211; 45.27.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15662\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-6.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 6\" width=\"451\" height=\"218\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-6.png 451w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-6-300x145.png 300w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><br \/>\nSo, the city receives _______ inches more snowfall than rainfall.<br \/>\nAnswer:<br \/>\nSo, the city receives 30.23 inches more snowfall than rainfall.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52184\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Think-and-Grow-Modeling-Real-Life.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Think and Grow-Modeling Real Life\" width=\"576\" height=\"289\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Think-and-Grow-Modeling-Real-Life.png 576w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Think-and-Grow-Modeling-Real-Life-300x151.png 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 13.<br \/>\nOn average, a left-handed professional baseball player runs from home plate to first base in 4.2 seconds. The record is 3.1 seconds. How much faster is the record than the average time?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15663\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-7.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 7\" width=\"195\" height=\"174\" \/><br \/>\nAnswer:<br \/>\n1.1 seconds is faster the record than the average time.<\/p>\n<p>Explanation:<br \/>\nTime taken on an average, a left-handed professional baseball player runs from home plate to first base = 4.2 seconds<br \/>\nTime of record = 3.1 seconds<br \/>\nDifference in the time = Time taken on an average, a left-handed professional baseball player runs from home plate to first base\u00a0 &#8211; Time of record<br \/>\n= 4.2 &#8211; 3.1<br \/>\n= 1.1 seconds<\/p>\n<p>Question 14.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nThe distances of each part of a triathlon are shown in the table. What is the total distance? How many more miles are traveled on land than in water?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15664\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-8.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 8\" width=\"235\" height=\"123\" \/><br \/>\nAnswer:<br \/>\nTotal Distance travelled on land than in water = 30.07 miles.<\/p>\n<p>Explanation:<br \/>\nDistance travelled to Swimming = 0.93 miles<br \/>\nDistance travelled on Bike = 24.8 miles<br \/>\nDistance travelled by Running = 6.2 miles<br \/>\nTotal Distance travelled on land = Distance travelled on Bike &#8211; Distance travelled by Running<br \/>\n= 24.8\u00a0 + 6.2<br \/>\n= 31 miles<br \/>\nTotal Distance travelled on land than in water = Total Distance travelled on land\u00a0 &#8211; Distance travelled to Swimming<br \/>\n= 31 &#8211; 0.93<br \/>\n= 30.07 miles<\/p>\n<p>Question 15.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYou paint a meter stick for a craft. You paint 30.7 centimeters blue and 67.9 centimeters green. How many millimeters are not painted?<br \/>\nAnswer:<br \/>\nLength of meter stick not painted = 14 millimeters<\/p>\n<p>Explanation:<br \/>\nLength of blue paint painted on meter stick = 30.7 centimeters<br \/>\nLength of green paint painted on meter stick = 67.9 centimeters<br \/>\nTotal length of meter stick painted = Length of blue paint painted on meter stick\u00a0 + Length of green paint painted on meter stick<br \/>\n= 30.7 + 67.9<br \/>\n= 98.6 centimeters<br \/>\nConversion:<br \/>\n1 meter = 100 centimeters<br \/>\nLength of meter stick not painted = 100 centimeters &#8211; 98.6 centimeters = 1.4 centimeters.<br \/>\n1 centimeter = 10 millimeters<br \/>\n1.4 centimeter = ???<br \/>\ncross multiplication:<br \/>\n1.4 \u00d7 10 \u00f7 1<br \/>\n= 14 \u00f7 1<br \/>\n= 14 millimeters.<\/p>\n<h3><a id=\"Use_Mental_Maths_to_Add_or_Subtract_Decimals_Homework_&amp;_Practice_3.6\"><\/a>Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6<\/h3>\n<p><strong>Use mental math to find the sum or difference<\/strong><br \/>\nQuestion 1.<br \/>\n2.73 + 2.14 = ______<br \/>\nAnswer:<br \/>\n2.73 + 2.14 = 4.87.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52347\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.1\" width=\"1224\" height=\"344\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1.png 1224w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1-300x84.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1-1024x288.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1-768x216.png 768w\" sizes=\"(max-width: 1224px) 100vw, 1224px\" \/><br \/>\nAdd 0.06 more than 2.14, so you must subtract 0.06 to 4.93 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52348\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.1...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.1..\" width=\"269\" height=\"240\" \/><\/p>\n<p>Question 2.<br \/>\n54.3 + 14.1 = ______<br \/>\nAnswer:<br \/>\n54.3 + 14.1 = 68.40<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52349\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.2\" width=\"1272\" height=\"331\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2.png 1272w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2-300x78.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2-1024x266.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2-768x200.png 768w\" sizes=\"(max-width: 1272px) 100vw, 1272px\" \/><\/p>\n<p>Add 0.9 more than 14.1, so you must subtract 0.9 to 69.3 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52352\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.2..-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.2..\" width=\"233\" height=\"216\" \/><\/p>\n<p>Question 3.<br \/>\n19.86 &#8211; 7.2 = ______<br \/>\nAnswer:<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52354\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.3\" width=\"1306\" height=\"335\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3-1.png 1306w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3-1-300x77.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3-1-1024x263.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3-1-768x197.png 768w\" sizes=\"(max-width: 1306px) 100vw, 1306px\" \/><\/p>\n<p>Subtract 0.8 more than 7.2, so you must add 0.8 to 11.86 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52356\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.3...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.3..\" width=\"265\" height=\"237\" \/><\/p>\n<p>Question 4.<br \/>\n41.19 &#8211; 0.58 = _______<br \/>\nAnswer:<br \/>\n41.19 &#8211; 0.58 =<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52357\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.4\" width=\"1261\" height=\"333\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4.png 1261w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4-300x79.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4-1024x270.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4-768x203.png 768w\" sizes=\"(max-width: 1261px) 100vw, 1261px\" \/><br \/>\nSubtract 0.02 more than 0.58 , so you must add 0.02 to 40.59 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52359\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.4..-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.4..\" width=\"249\" height=\"209\" \/><\/p>\n<p>Question 5.<br \/>\n6.5 + 2.32 + 1.5 = _____<br \/>\nAnswer:<br \/>\n6.5 + 2.32 + 1.5 = 10.32.<\/p>\n<p>Explanation:<br \/>\nNotice that 6.5 and 1.5 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n6.5 + 2.32 + 1.5\u00a0 = 2.32 + 6.5 + 1.5 Commutative Property<br \/>\n= 2.32 + (6.5 + 1.5)\u00a0 Associative Property<br \/>\n= 2.32 + 8.0<br \/>\n= 10.32.<\/p>\n<p>Explanation:<\/p>\n<p>Question 6.<br \/>\n2.25 &#8211; 1.15 = ______<br \/>\nAnswer:<br \/>\n2.25 &#8211; 1.15 = 1.10.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52360\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.6\" width=\"1234\" height=\"344\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6.png 1234w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6-300x84.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6-1024x285.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6-768x214.png 768w\" sizes=\"(max-width: 1234px) 100vw, 1234px\" \/><br \/>\nSubtract 0.05 more than 1.15 , so you must add 0.05 to 1.05 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-52361\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use Mental Maths to Add or Subtract Decimals Homework &amp; Practice 3.6.6..\" width=\"212\" height=\"211\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6...png 212w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Homework-Practice-3.6.6..-150x150.png 150w\" sizes=\"(max-width: 212px) 100vw, 212px\" \/><\/p>\n<p>Question 7.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nYour friend finds 23.74 &#8211; 13.18. Is your friend correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15665\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-9.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 9\" width=\"260\" height=\"126\" \/><br \/>\nAnswer:<br \/>\nMy Friend answer is correct because he used mental math to do the sum of the given numbers.<\/p>\n<p>Explanation:<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-9.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 9\" \/><\/p>\n<p>Question 8.<br \/>\n<strong>Writing<\/strong><br \/>\nDescribe a situation when you would use the Commutative Property to add decimals using mental math.<br \/>\nAnswer:<\/p>\n<p id=\"x-ck12-YTQyMjQxM2MwZjZhMTRkMTY5NTgyNzJkOWFmMTRjNDY.-rob\">The Commutative Property of Addition states that\u00a0the order of the addends does not change the sum.<br \/>\nLet\u2019s test the property using simple whole numbers.<\/p>\n<p id=\"x-ck12-sxr\"><span class=\"x-ck12-mathEditor\" data-mathmethod=\"block\" data-contenteditable=\"false\" data-edithtml=\"\" data-tex=\"4%20%2B%205%20%2B%209%20%3D%2018%20%26%26%205%20%2B%204%20%2B%209%20%3D%2018%20%26%26%209%20%2B%205%20%2B%204%20%3D%2018%5C%5C%0A4%20%2B%209%20%2B%205%20%3D%2018%20%26%26%205%20%2B%209%20%2B%204%20%3D%2018%20%26%26%209%20%2B%204%20%2B%205%20%3D%2018\" data-math-class=\"x-ck12-block-math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-1\" class=\"math\"><span id=\"MathJax-Span-2\" class=\"mrow\"><span id=\"MathJax-Span-3\" class=\"mtable\"><span id=\"MathJax-Span-4\" class=\"mtd\"><span id=\"MathJax-Span-5\" class=\"mrow\"><span id=\"MathJax-Span-6\" class=\"mn\">4<\/span><span id=\"MathJax-Span-7\" class=\"mo\">+<\/span><span id=\"MathJax-Span-8\" class=\"mn\">5<\/span><span id=\"MathJax-Span-9\" class=\"mo\">+<\/span><span id=\"MathJax-Span-10\" class=\"mn\">9<\/span><span id=\"MathJax-Span-11\" class=\"mo\">=<\/span><span id=\"MathJax-Span-12\" class=\"mn\">18\u00a0 \u00a0 \u00a0 \u00a0<\/span><\/span><\/span><span id=\"MathJax-Span-35\" class=\"mtd\"><span id=\"MathJax-Span-36\" class=\"mrow\"><span id=\"MathJax-Span-37\" class=\"mn\">4<\/span><span id=\"MathJax-Span-38\" class=\"mo\">+<\/span><span id=\"MathJax-Span-39\" class=\"mn\">9<\/span><span id=\"MathJax-Span-40\" class=\"mo\">+<\/span><span id=\"MathJax-Span-41\" class=\"mn\">5<\/span><span id=\"MathJax-Span-42\" class=\"mo\">=<\/span><span id=\"MathJax-Span-43\" class=\"mn\">18\u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span><\/span><\/span><span id=\"MathJax-Span-13\" class=\"mtd\"><span id=\"MathJax-Span-14\" class=\"mrow\"><\/span><\/span><span id=\"MathJax-Span-44\" class=\"mtd\"><span id=\"MathJax-Span-45\" class=\"mrow\"><\/span><\/span><span id=\"MathJax-Span-15\" class=\"mtd\"><span id=\"MathJax-Span-16\" class=\"mrow\"><span id=\"MathJax-Span-17\" class=\"mn\">5<\/span><span id=\"MathJax-Span-18\" class=\"mo\">+<\/span><span id=\"MathJax-Span-19\" class=\"mn\">4<\/span><span id=\"MathJax-Span-20\" class=\"mo\">+<\/span><span id=\"MathJax-Span-21\" class=\"mn\">9<\/span><span id=\"MathJax-Span-22\" class=\"mo\">=<\/span><span id=\"MathJax-Span-23\" class=\"mn\">18\u00a0 \u00a0 \u00a0 \u00a0 <\/span><\/span><\/span><span id=\"MathJax-Span-46\" class=\"mtd\"><span id=\"MathJax-Span-47\" class=\"mrow\"><span id=\"MathJax-Span-48\" class=\"mn\">5<\/span><span id=\"MathJax-Span-49\" class=\"mo\">+<\/span><span id=\"MathJax-Span-50\" class=\"mn\">9<\/span><span id=\"MathJax-Span-51\" class=\"mo\">+<\/span><span id=\"MathJax-Span-52\" class=\"mn\">4<\/span><span id=\"MathJax-Span-53\" class=\"mo\">=<\/span><span id=\"MathJax-Span-54\" class=\"mn\">18\u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span><\/span><\/span><span id=\"MathJax-Span-24\" class=\"mtd\"><span id=\"MathJax-Span-25\" class=\"mrow\"><\/span><\/span><span id=\"MathJax-Span-55\" class=\"mtd\"><span id=\"MathJax-Span-56\" class=\"mrow\"><\/span><\/span><span id=\"MathJax-Span-26\" class=\"mtd\"><span id=\"MathJax-Span-27\" class=\"mrow\"><span id=\"MathJax-Span-28\" class=\"mn\">9<\/span><span id=\"MathJax-Span-29\" class=\"mo\">+<\/span><span id=\"MathJax-Span-30\" class=\"mn\">5<\/span><span id=\"MathJax-Span-31\" class=\"mo\">+<\/span><span id=\"MathJax-Span-32\" class=\"mn\">4<\/span><span id=\"MathJax-Span-33\" class=\"mo\">=<\/span><span id=\"MathJax-Span-34\" class=\"mn\">18\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span><\/span><\/span><span id=\"MathJax-Span-57\" class=\"mtd\"><span id=\"MathJax-Span-58\" class=\"mrow\"><span id=\"MathJax-Span-59\" class=\"mn\">9<\/span><span id=\"MathJax-Span-60\" class=\"mo\">+<\/span><span id=\"MathJax-Span-61\" class=\"mn\">4<\/span><span id=\"MathJax-Span-62\" class=\"mo\">+<\/span><span id=\"MathJax-Span-63\" class=\"mn\">5<\/span><span id=\"MathJax-Span-64\" class=\"mo\">=<\/span><span id=\"MathJax-Span-65\" class=\"mn\">18<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p id=\"x-ck12-NWM5NmFkYTA1MmZkOGEyYTc1NGY5YjEyYjI5ZGI4OTc.-mxd\">As you can see, we can add the three addends (4, 5, and 9) in many different orders. The Commutative Property of Addition works also works for four, five, six addends, and it works for decimal addends, too.<\/p>\n<p>Question 9.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nUse mental math to find the missing number.<br \/>\nAnswer:<\/p>\n<p>Question 10.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nHow much wider is the wingspan of the albatross than the length of an 8.89-foot-long alligator?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15666\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-10.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 10\" width=\"257\" height=\"123\" \/><br \/>\nAnswer:<br \/>\n2.06 feet wider is the wingspan of the albatross than the length of an 8.89-foot-long alligator.<\/p>\n<p>Explanation:<br \/>\nLength of Albatross wingspan = 10.95 feet<br \/>\nLength of\u00a0 long Alligator = 8.89 foot<br \/>\nDifference:<br \/>\nLength of Albatross wingspan &#8211; Length of\u00a0 long Alligator<br \/>\n= 10.95 &#8211; 8.89<br \/>\n= 2.06 feet<\/p>\n<p>Question 11.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYour friend buys 3.5 meters of blue ribbon, 2.25 meters of red ribbon, and 3.75 meters of white ribbon. How much ribbon does she buy in all?<br \/>\nAnswer:<br \/>\nTotal Length of all ribbons = 9.50 meters.<\/p>\n<p>Explanation:<br \/>\nLength of blue ribbon = 3.5 meters<br \/>\nLength of red ribbon = 2.25 meters<br \/>\nLength of white ribbon = 3.75 meters<br \/>\nTotal Length of all ribbons = Length of blue ribbon + Length of red ribbon + Length of white ribbon<br \/>\n= 3.5 + 2.25 + 3.75<br \/>\n= 5.75 + 3.75<br \/>\n= 9.50 meters<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Use the figure.<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15667\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-5th-Grade-Chapter-3-Add-and-Subtract-Decimals-3.6-11.png\" alt=\"Big Ideas Math Answers 5th Grade Chapter 3 Add and Subtract Decimals 3.6 11\" width=\"194\" height=\"203\" \/><br \/>\nQuestion 12.<br \/>\nName a line segment.<br \/>\nAnswer:<br \/>\nLine segment = CD or DE or EF<\/p>\n<p>Explanation:<br \/>\nIn\u00a0\u00a0geometry, a line segment is a part of a\u00a0 line that is bounded by two distinct end\u00a0 points , and contains every point on the line between its endpoints.<\/p>\n<p>Question 13.<br \/>\nName two different rays.<br \/>\nAnswer:<br \/>\nEF and AB are two different Rays.<\/p>\n<p>Explanation:<br \/>\nIn geometry, a ray can be defined as a part of a\u00a0\u00a0line that has a fixed starting point but no end point. It can extend infinitely in one direction.<\/p>\n<p>Question 14.<br \/>\nName two different lines.<br \/>\nAnswer:<br \/>\nEA and DF are different lines.<\/p>\n<p>Explanation:<br \/>\nIn geometry, a\u00a0line\u00a0can be defined as a straight one- dimensional figure that has no thickness and extends endlessly in both directions. It is often described as the shortest distance between any two points.<\/p>\n<h3><a id=\"Lesson_3.7_Problem_Solving:_Money\"><\/a>Lesson 3.7 Problem Solving: Money<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use addition or subtraction to make several item Cost conclusions about the prices of the items in the table.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15668\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-1.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 1\" width=\"178\" height=\"155\" \/><br \/>\nAnswer:<br \/>\nTotal cost of all items = $180.77.<\/p>\n<p>Explanation:<br \/>\nCost of Video game = $54.93<br \/>\nCost of Selfie stick = $15.08<br \/>\nCost of Power Bank = $27.36<br \/>\nCost of Speaker = $83.40<br \/>\nTotal cost of all items = Cost of Video game + Cost of Selfie stick + Cost of Power Bank + Cost of Speaker<br \/>\n= $54.93 + $15.08 + $27.36 + $83.40<br \/>\n= $70.01 + $27.36 + $83.40<br \/>\n= $97.37 + $83.40<br \/>\n= $180.77.<\/p>\n<p><strong>Precision<\/strong><br \/>\nSwitch papers with your partner. Check your partner\u2019s work for reasonableness.<br \/>\nAnswer: Both the answers are reasonableness because the answers procedure is same and answers match.<\/p>\n<p><strong>Think and Grow: Problem Solving: Money<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nYou have$11.83. You earn $13.75 more doing chores. Then you buy headphones for $12.39. How much money do you have left?<br \/>\n<strong>Understand the Problem<\/strong><br \/>\nWhat do you know?<br \/>\n\u2022 You have $11.83.<br \/>\n\u2022 You earn $13.75 more.<br \/>\n\u2022 You buy headphones for $12.39.<\/p>\n<p>What do you need to find?<br \/>\n\u2022 You need to find how much money you have left.<\/p>\n<p><strong>Make a Plan<\/strong><br \/>\nHow will you solve?<br \/>\nWrite and solve an equation to find the amount of money you have left.<\/p>\n<p><strong>Solve<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15669\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-2.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 2\" width=\"410\" height=\"68\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-2.png 410w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-2-300x50.png 300w\" sizes=\"(max-width: 410px) 100vw, 410px\" \/><br \/>\nLet s represent the amount of money you have left.<br \/>\ns = 11.83 + 13.75 &#8211; 12.39<br \/>\n= ______ \u2212 12.39<br \/>\n= ______<br \/>\nYou have $ ______ left.<br \/>\nAnswer:<br \/>\nAmount left out with me = $13.19.<\/p>\n<p>Explanation:<br \/>\nAmount of money I have = $11.83<br \/>\nAmount of money I have earned = $13.75<br \/>\nCost of Headphones = $12.39<br \/>\nAmount left out with me = Amount of money I have + Amount of money I have earned + Cost of Headphones<br \/>\n= $11.83 + $13.75 &#8211; $12.39<br \/>\n= $25.58 &#8211; $12.39<br \/>\n= $13.19.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\nYou have $32.63. You earn $28.42 more washing windows. Then you buy a video game for $35.95.How much money do you have left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15670\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-3.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 3\" width=\"239\" height=\"190\" \/><br \/>\nAnswer:<br \/>\nAmount of money left with me = $25.1.<\/p>\n<p>Explanation:<br \/>\nAmount of money I have = $32.63<br \/>\nAmount of money earned = $28.42<br \/>\nCost of Video game = $35.95<br \/>\nAmount of money left with me = Amount of money I have + Amount of money earned + Cost of Video game<br \/>\n= $32.63 + $28.42 &#8211; $35.95<br \/>\n= $61.05 &#8211; $35.95<br \/>\n= $25.1.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Understand the problem. What do you know? What do you need to find? Explain.<\/strong><br \/>\nQuestion 2.<br \/>\nYou buy 3 cell phone games that cost $5 each and an in-game purchase for $1.69. How much money do you spend?<br \/>\nAnswer:<br \/>\nTotal Cost of money spent = $16.69<\/p>\n<p>Explanation:<br \/>\nCost of 3 cell phones games = 3 \u00d7 $5 = $15<br \/>\nCost of an in-game = $1.69<br \/>\nTotal Cost of money spent = Cost of 3 cell phones games + Cost of an in-game<br \/>\n= $15 + $1.69<br \/>\n= $16.69.<\/p>\n<p>Question 3.<br \/>\nNewton buys a movie ticket that costs $4.50, a drink that costs $2.25, and a bag of popcorn that costs $4.75. How much money does Newton spend?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15671\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-4.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 4\" width=\"132\" height=\"132\" \/><br \/>\nAnswer:<br \/>\nTotal amount spent = $11.50.<\/p>\n<p>Explanation:<br \/>\nCost of movie ticket = $4.50<br \/>\nCost of a drink = $2.25<br \/>\nCost of a bag of popcorn = $4.75<br \/>\nTotal amount spent = Cost of movie ticket + Cost of a drink + Cost of a bag of popcorn<br \/>\n= $4.50 + $2.25 + $4.75<br \/>\n= $6.75 + $4.75<br \/>\n= $11.50.<\/p>\n<p><strong>Understand the problem. Then make a plan. How will you solve? Explain.<\/strong><br \/>\nQuestion 4.<br \/>\nYour friend buys a remote control car for$17.89 and some batteries for $5.49. He gives the cashier $25. How much change does he receive?<br \/>\nAnswer:<br \/>\nAmount of change he receives = $1.62.<\/p>\n<p>Explanation:<br \/>\nCost of remote control car = $17.89<br \/>\nCost of Some batteries = $5.49<br \/>\nMoney given to cashier = $25<br \/>\nAmount of change he receives = Money given to cashier- Cost of remote control car + Cost of Some batteries &#8211;<br \/>\n= $25 &#8211; $17.89 + $5.49<br \/>\n= $25 &#8211; $23.38<br \/>\n= $1.62.<\/p>\n<p>Question 5.<br \/>\nYour cousin has $156.34 in his bank account. He withdraws $15.50 one day and $6.75 the next day.\u00a0 How much money is in his bank account now?<br \/>\nAnswer:<br \/>\nAmount left in his bank account = $134.09.<\/p>\n<p>Explanation:<br \/>\nAmount of money my cousin has in bank account = $156.34<br \/>\nAmount of money he withdraws one day = $15.50<br \/>\nAmount of money he withdraws next day = $6.75<br \/>\nAmount left in his bank account = Amount of money my cousin has in bank account &#8211; Amount of money he withdraws one day &#8211;<br \/>\nAmount of money he withdraws next day<br \/>\n= $156.34 &#8211; $15.50 &#8211; $6.75<br \/>\n= $156.34 &#8211; $22.25<br \/>\n= $134.09.<\/p>\n<p>Question 6.<br \/>\nAdult admission to open skate night costs $5.75. Admission for children under 13 costs $1.50 less than adult admission. What is the total admission cost for two 12-year-olds?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15672\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-5.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 5\" width=\"171\" height=\"144\" \/><br \/>\nAnswer:<br \/>\nTotal admission cost for two 12-year-olds = $10.<\/p>\n<p>Explanation:<br \/>\nCost of Adult admission to open skate night = $5.75<br \/>\nCost of Admission for children under 13 costs $1.50 less than adult admission<br \/>\n=&gt; $5.75 &#8211; $1.50<br \/>\n=&gt; $4.25<br \/>\nTotal admission cost for two 12-year-olds = Cost of Adult admission to open skate night\u00a0 + Cost of Admission for children under 13<br \/>\n= $5.75 + $4.25<br \/>\n= $10.<\/p>\n<p>Question 7.<br \/>\nDescartes buys a book for $14.99 and a bookmark. He pays with a $20 bill and receives $3.96 in change. How much does the bookmark cost?<br \/>\nAnswer:<br \/>\nCost of the book mark = $1.05.<\/p>\n<p>Explanation:<br \/>\nCost of the book and a bookmark = $14.99<br \/>\nAmount paid by a bill = $20<br \/>\nAmount of money received as change = $3.96<br \/>\nCost of the book mark = Amount paid by a bill &#8211; Cost of the book and a bookmark &#8211; Amount of money received as change<br \/>\n= $20 &#8211; $14.99 &#8211; $3.96<br \/>\n= $5.01 &#8211; $3.96<br \/>\n= $1.05.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p><strong>Example<\/strong><br \/>\nYou pay for colored pencils, a coloring book, and a pencil sharpener with two $20 bills. Your change is $17.42. How much does the pencil sharpener cost?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15673\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-6.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 6\" width=\"186\" height=\"199\" \/><br \/>\nThink: What do you know? What do you need to find? How will you solve?<br \/>\nWrite and solve an equation to find the cost of the pencil sharpener.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15674\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-7.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 7\" width=\"622\" height=\"61\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-7.png 622w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-7-300x29.png 300w\" sizes=\"(max-width: 622px) 100vw, 622px\" \/><br \/>\nLet c represent the cost of the pencil sharpener.<br \/>\nc = 40 &#8211; (8.99 + 5.99) &#8211; 17.42<br \/>\n= 40 &#8211; ______ &#8211; 17.42<br \/>\n= ____ \u2212 17.42<br \/>\n= _____<br \/>\nThe pencil sharpener costs $ _____.<br \/>\nAnswer:<br \/>\nCost of the pencil sharpener costs = $7.6.<\/p>\n<p>Explanation:<br \/>\nCost of the coloring book = $5.99<br \/>\nCost of the colored pencils = $8.99<br \/>\nAmount received as change = $17.42<br \/>\nAmount paid in two bills = $20 \u00d7 2 = $40<br \/>\nCost of the pencil sharpener costs = Amount paid in two bills\u00a0 &#8211; (Cost of the coloring book + Cost of the colored pencils) + Amount received as change<br \/>\n= $40 &#8211; (\u00a0$5.99 + $8.99 ) &#8211; $17.42<br \/>\n= $40 &#8211; $14.98 &#8211; $17.42<br \/>\n= $25.02 &#8211; $17.42<br \/>\n= $7.6.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 8.<br \/>\nNewton pays for a new collar, a bag of dog food, and a box of bones with four $5 bills. His change is $4.02. How much does the box of bones cost?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15675\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-8.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 8\" width=\"261\" height=\"171\" \/><br \/>\nAnswer:<br \/>\nCost of the box of bones = $3.39.<\/p>\n<p>Explanation:<br \/>\nCost of a bag of dog food = $5.49<br \/>\nCost of a dog&#8217;s new collar = $7.10<br \/>\nAmount of change he receives = $4.02<br \/>\nAmount paid in four bills = $5 \u00d7 4 = $20.<br \/>\nCost of the box of bones = Amount paid in four bills &#8211; (Cost of a bag of dog food &#8211; Cost of a dog&#8217;s new collar) &#8211; Amount of change he receives<br \/>\n= $20 &#8211; ($5.49 + $7.10) &#8211; $4.02<br \/>\n= $20 &#8211; $12.59 &#8211; $4.02<br \/>\n= $7.41 -$4.02<br \/>\n= $3.39.<\/p>\n<p>Question 9.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYour friend buys the scooter and the helmet. Your friend has two gift cards that are worth the same amount. Your friend uses both gift cards and pays an additional $2.49. What is the amount on each gift card?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15676\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-9.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 9\" width=\"251\" height=\"205\" \/><br \/>\nAnswer:<br \/>\nCost of the each gift cards = $75.<\/p>\n<p>Explanation:<br \/>\nCost of the Helmet = $27.50<br \/>\nCost of the Scooter = $124.99<br \/>\nAmount of money paid additionally = $2.49<br \/>\nLet the gifts cards be X.<br \/>\n= 2Cost of the each gift cards\u00a0+ Amount of money paid additionally = (Cost of the Helmet + Cost of the Scooter)<br \/>\n=&gt; 2X + $2.49 = $27.50 + $124.99<br \/>\n=&gt; 2X + $2.49 = $152.49<br \/>\n=&gt; 2X = $152.49 &#8211; $2.49<br \/>\n=&gt; 2X = $150.00<br \/>\n=&gt; X = $150.00 \u00f7 2<br \/>\n=&gt; X = $75.<\/p>\n<h3><a id=\"Problem_Solving:_Money_Homework_&amp;_Practice_3.7\"><\/a>Problem Solving: Money Homework &amp; Practice 3.7<\/h3>\n<p><strong>Understand the problem. What do you know? What do you need to find? Explain.<\/strong><br \/>\nQuestion 1.<br \/>\nA musician buys an electronic keyboard for $89.94 and 2 books of sheet music for $7.99 each. How much does she spend in all?<br \/>\nAnswer:<br \/>\nTotal cost of money spent = $105.92.<\/p>\n<p>Explanation:<br \/>\nCost of an electronic keyboard = $89.94<br \/>\nCost of two books of sheet music = $7.99 \u00d7 2 = $15.98<br \/>\nTotal cost of money spent = Cost of an electronic keyboard + Cost of two books of sheet music<br \/>\n= $89.94 +\u00a0 $15.98<br \/>\n= $105.92<\/p>\n<p>Question 2.<br \/>\nYou have$28.49. You spend $14.95 at a bowling alley. You win $35.00 for setting the record score for your age group. How much money do you have now?<br \/>\nAnswer:<br \/>\nAmount of money I have now = $48.54.<\/p>\n<p>Explanation:<br \/>\nAmount of money I have = $28.49<br \/>\nAmount spent at a bowling alley = $14.95<br \/>\nAmount of money won = $35.00<br \/>\nAmount of money I have now = Amount of money I have &#8211; Amount spent at a bowling alley\u00a0 + Amount of money won<br \/>\n=&gt; $28.49 &#8211; $14.95 + $35.00<br \/>\n=&gt; $13.54 + \u00a0$35.00<br \/>\n=&gt; $48.54.<\/p>\n<p><strong>Understand the problem. Then make a plan. How will you solve? Explain.<\/strong><br \/>\nQuestion 3.<br \/>\nNewton wins a $50 gift card toa craft store. He uses the card to buy a scrapbook for $19.99 and a set of markers for $10.75. How much money is left on his gift card?<br \/>\nAnswer:<br \/>\nAmount of money left on his gift card = $19.26.<\/p>\n<p>Explanation:<br \/>\nAmount of money won for a gift card to a craft store = $50<br \/>\nAmount of money spent to buy a scrapbook by using card = $19.99<br \/>\nAmount of money spent to buy a set of markers by using card = $10.75<br \/>\nAmount of money left on his gift card = Amount of money won for a gift card to a craft store &#8211; (Amount of money spent to buy a scrapbook by using card\u00a0 + Amount of money spent to buy a set of markers by using card)<br \/>\n= $50 &#8211; ($19.99 + $10.75)<br \/>\n= $ 50 &#8211; $30.74<br \/>\n= $19.26.<\/p>\n<p>Question 4.<br \/>\nA dancer buys a tutu for $48.75 and the ballet shoes. She gives the cashier $80. How much change does she receive?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15677\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-10.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 10\" width=\"201\" height=\"111\" \/><br \/>\nAnswer:<br \/>\nAmount of change received = $4.76.<\/p>\n<p>Explanation:<br \/>\nCost of the \u00a0ballet shoes = $26.49<br \/>\nCost of the tutu = $48.75<br \/>\nAmount given to cashier = $80<br \/>\nAmount of change received = Amount given to cashier &#8211; (Cost of the tutu + Cost of the ballet shoes )<br \/>\n= $80 &#8211; ( $ 26.49 + $48.75)<br \/>\n= $80 &#8211; $75.24<br \/>\n= $4.76<\/p>\n<p>Question 5.<br \/>\nA theater director buys props for$116.20 and costumes for $494.85. He has $194.27 left. How much money did he have to start?<br \/>\nAnswer:<br \/>\nAmount of money he\u00a0 have started = $805.32.<\/p>\n<p>Explanation:<br \/>\nCost of props = $116.20<br \/>\nCost of the costumes = $494.85<br \/>\nAmount left with him = $194.27<br \/>\nAmount of money he\u00a0 have started = Cost of the costumes + Cost of props + Amount left with him<br \/>\n= $116.20 + $494.85 + $194.27<br \/>\n= $611.05 + $194.27<br \/>\n= $805.32<\/p>\n<p>Question 6.<br \/>\nDescartes uses a metal detector at a beach. He finds 3 quarters, 6 dimes,2 nickels, and 5 pennies. He drops1 quarter and 2 pennies into the water. Then he finds 4 more dimes. How much money does Descartes have now?<br \/>\nAnswer:<br \/>\nTotal amount of money Descartes have now = 163 pennies.<\/p>\n<p>Explanation:<br \/>\nNumber of dimes found = 6<br \/>\nNumber of quarters found = 3<br \/>\nNumber of pennies found = 5<br \/>\nNumber of nickels found = 2<br \/>\nNumber of quarters dropped into water= 1<br \/>\nNumber of pennies dropped into water = 2<br \/>\nNumber of dimes found later = 4<br \/>\nConversion:<\/p>\n<p>Total number of quarters = Number of quarters found\u00a0 &#8211; Number of quarters dropped into water<br \/>\n=&gt; 3 &#8211; 1 = 2<br \/>\nQuarter into pennies<br \/>\n=&gt; 1 Quarter = 25 pennies<br \/>\n=&gt; 2 Quarter\u00a0 = 25 \u00d7 2 = 50 pennies.<\/p>\n<p>Total number of dimes = Number of dimes found\u00a0 + Number of dimes found later<br \/>\n=&gt; 6 +4 = 10<br \/>\nDimes into pennies<br \/>\n=&gt; 1 Dime = 10 pennies<br \/>\n=&gt; 10 Dime = 10 \u00d7 10 = 100 pennies<\/p>\n<p>Total number of Nickels = Number of nickels found<br \/>\n=&gt; 2<br \/>\nNickels into pennies<br \/>\n=&gt; 1 Nickel = 5 pennies<br \/>\n=&gt; 2 nickels = 2 \u00d7 5 = 10 pennies<\/p>\n<p>Total Number of pennies = Number of pennies found &#8211; Number of pennies dropped into water<br \/>\n=&gt; 5 &#8211; 2<br \/>\n=&gt;3 pennies<br \/>\nTotal amount of money Descartes have now = Total number of quarters\u00a0 + Total number of dimes + Total number of Nickels + Total Number of pennies<br \/>\n= 50 pennies + 100 pennies + 10 pennies + 3pennies<br \/>\n= 163 pennies.<\/p>\n<p>Question 7.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nDescartes wants to buy a ball launcher for Newton for $12.50. He has one $10 bill, two $5 bills, three $1 bills, and two quarters. Make a table to find four ways Descartes could pay for the ball launcher.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15678\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-11.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 11\" width=\"624\" height=\"183\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-11.png 624w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-11-300x88.png 300w\" sizes=\"(max-width: 624px) 100vw, 624px\" \/><br \/>\nAnswer:<br \/>\nAmount of change Descartes receives = $11.00.<\/p>\n<p>Explanation:<br \/>\nCost of a ball launcher = $12.50<br \/>\nNumber of bills he has worth $10 = 1<br \/>\nNumber of bills he has worth $5 = 2<br \/>\nNumber of bills he has worth $1 = 3<br \/>\nNumber of quarters he has = 2<br \/>\nConversion:<br \/>\nQuarter into Dollars<br \/>\n1 Quarter = $0.25<br \/>\n=&gt;2 Quarter = 0.25 \u00d7 2 = $0.50.<\/p>\n<p>Amount given to cashier =\u00a0 Number of bills he has worth $10 + Number of bills he has worth $5 + Number of bills he has worth $1 +<br \/>\nNumber of quarters he has<br \/>\n=&gt; $10 + $5 + $5 + $1 + $1 + $1 + $0.50<br \/>\n=&gt; $23.50<\/p>\n<p>Amount of change Descartes receives = Amount given to cashier &#8211; Cost of a ball launcher<br \/>\n=&gt; $23.50 &#8211; $12.50<br \/>\n= $11.00<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54055\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Problem-Solving-Money-Homework-Practice-3.7.7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Problem Solving-Money Homework &amp; Practice 3.7.7\" width=\"561\" height=\"262\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Problem-Solving-Money-Homework-Practice-3.7.7.png 561w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Problem-Solving-Money-Homework-Practice-3.7.7-300x140.png 300w\" sizes=\"(max-width: 561px) 100vw, 561px\" \/><\/p>\n<p>Question 8.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYour science teacher pays for an ultraviolet light, a beaker, and a glowing liquid kit with five $5 bills. The ultraviolet light costs $13.29. The beaker costs $7.99. Your teacher&#8217;s change is $0.77. What is the cost of the glowing liquid kit?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15679\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-12.png\" alt=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals 3.7 12\" width=\"115\" height=\"190\" \/><br \/>\nAnswer:<br \/>\nCost of the glowing liquid kit = $2.95<\/p>\n<p>Explanation:<br \/>\nCost of the ultraviolet light = $13.29<br \/>\nCost of the beaker = $7.99<br \/>\nAmount of change teacher receives= $0.77<\/p>\n<p>Your science teacher pays an ultraviolet light, a beaker, and a glowing liquid kit with five $5 bills<br \/>\n=&gt; Cost of the ultraviolet light\u00a0 + Cost of the beaker\u00a0 + Cost of the glowing liquid kit + Amount of change teacher receives = 5 \u00d7 $5<br \/>\n=&gt; $13.29 + $7.99 + Cost of the glowing liquid kit + $0.77 = $25<br \/>\n=&gt; $22.05 + Cost of the glowing liquid kit = $25<br \/>\n=&gt; Cost of the glowing liquid kit = $25 &#8211; $22.05<br \/>\n=&gt; Cost of the glowing liquid kit = $2.95<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the equivalent length.<\/strong><br \/>\nQuestion 9.<br \/>\n10 ft = _____ in.<br \/>\nAnswer:<br \/>\n10 ft = 120 in.<\/p>\n<p>Explanation:<br \/>\nConversion:<br \/>\n1 feet = 12 inches<br \/>\n=&gt; 10 feet = 10 \u00d7 12 =120 inches.<\/p>\n<p>Question 10.<br \/>\n2 mi = ______ ft<br \/>\nAnswer:<br \/>\n2 mi = 10560 ft<\/p>\n<p>Explanation:<br \/>\nConversion:<br \/>\n1 Mile = 5280 feet<br \/>\n2 mi = 5280 \u00d7 2 = 10560 ft<\/p>\n<p>Question 11.<br \/>\n\\(\\frac{1}{3}\\) yd = ______ ft<br \/>\nAnswer:<br \/>\n\\(\\frac{1}{3}\\) yd = \\({1}\\) feet.<\/p>\n<p>Explanation:<br \/>\nConversion:<br \/>\n1 Yard = 3 Feet<br \/>\n\\(\\frac{1}{3}\\) yd = \\(\\frac{1}{3}\\) yd\u00a0 \u00d7 \\({3}\\) = \\({1}\\) feet<\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_Performance_Task\"><\/a>Add and Subtract Decimals Performance Task<\/h3>\n<p>The table shows the average amount of rainfall each month Rainfall in Mobile, Alabama. Mobile, Alabama<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15680\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-1.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 1\" width=\"223\" height=\"462\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-1.png 223w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-1-145x300.png 145w\" sizes=\"(max-width: 223px) 100vw, 223px\" \/><br \/>\nQuestion 1.<br \/>\nAbout how many inches of rainfall does the city get Average Month Rainfall during June, July, and August combined?<br \/>\nAnswer:<br \/>\nAverage rainfall during June, July, and August = 6.77 inches.<\/p>\n<p>Explanation:<br \/>\nRainfall rate in June month = 6.10 inches<br \/>\nRainfall rate in July month = 7.24 inches<br \/>\nRainfall rate in August month = 6.97 inches<br \/>\nAverage rainfall during June, July, and August = Rainfall rate in June month + Rainfall rate in July month + Rainfall rate in August month \u00f7 3<br \/>\n= 6.10 + 7.24\u00a0 + 6.97\u00a0 \u00f7 3<br \/>\n= 20.31 \u00f7 3<br \/>\n= 6.77 inches<\/p>\n<p>Question 2.<br \/>\nHow many more inches of rainfall does the city usually get in July than in October?<br \/>\nAnswer:<br \/>\n3.54 inches. of Rainfall is more in the city in July\u00a0 month than in October month.<\/p>\n<p>Explanation:<br \/>\nRainfall in July month = 7.24 inches<br \/>\nRainfall in October month = 3.70 inches<br \/>\nComparison:<br \/>\n=\u00a0Rainfall in July month &#8211; Rainfall in October month<br \/>\n= 7.24\u00a0 &#8211; 3.70<br \/>\n= 3.54 inches.<\/p>\n<p>Question 3.<br \/>\na. Round each rainfall amount to the nearest tenth. About how many inches of rainfall does Mobile get each year?<br \/>\nb. How can you check whether your answer is reasonable?<br \/>\nAnswer:<br \/>\na)\u00a0 The total Rainfall Mobile gets each year = 66.22 inches.<br \/>\nb) We can check the answer is reasonable or not by rounding it to its nearest 10.<\/p>\n<p>Explanation:<br \/>\na) Round each rainfall amount to the nearest tenth.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-54486\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task-3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Performance Task-3\" width=\"306\" height=\"562\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task-3.png 306w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task-3-163x300.png 163w\" sizes=\"(max-width: 306px) 100vw, 306px\" \/><br \/>\n5 and above rainfall rate is said to be rounded to its nearest 10 as 10.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-54488\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Performance Task\" width=\"313\" height=\"586\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task.png 313w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Performance-Task-160x300.png 160w\" sizes=\"(max-width: 313px) 100vw, 313px\" \/><\/p>\n<p>b)<br \/>\nWe can check the answer is reasonable or not by rounding it to its nearest 10.<br \/>\n63 is close reasonable to 66.22.<\/p>\n<p>&nbsp;<\/p>\n<p>Question 4.<br \/>\nThe average yearly amount of rainfall in Seattle, Washington, is about 3 feet.<br \/>\na. Write an expression to find about how many more inches of rain Mobile, Alabama, usually gets than Seattle each year.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15681\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-2.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 2\" width=\"246\" height=\"164\" \/><br \/>\nb. Seattle is known for being one of the rainiest cities in the United States, even though it usually gets less rain than Mobile each year. Why do you think Seattle is known as the rainiest city?<br \/>\nAnswer:<br \/>\na) 30.22 inches of rain Mobile, Alabama, usually gets than Seattle each year.<\/p>\n<p>b) Seattle is known for being one of the rainiest cities in the United States, even though it usually gets less rain than Mobile each year. This means that Seattle has more frequent rain, but the light rain results in low totals than compared to rainfall in Mobile, Alabama.<\/p>\n<p>Explanation:<br \/>\na)The average yearly amount of rainfall in Seattle, Washington, is about 3 feet.<br \/>\n=&gt; Average Rainfall of Seattle, Washington\u00a0 = 3 feet.<br \/>\nTotal Average of\u00a0 Rainfall in Mobile, Alabama = 66.22 inches<br \/>\nDifference :<br \/>\n1 feet = 12 inches<br \/>\n=&gt; 3 feet = 12 \u00d7 3 = 36 inches<br \/>\nTotal Average of\u00a0 Rainfall in Mobile, Alabama &#8211; Average Rainfall of Seattle, Washington<br \/>\n= 66.22 &#8211; 36<br \/>\n= 30.22 inches<\/p>\n<p>b)<br \/>\nSeattle is known for being one of the rainiest cities in the United States, even though it usually gets less rain than Mobile each year. This means that Seattle has more frequent rain, but the light rain results in low totals than compared to rainfall in Mobile, Alabama.<\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_Activity\"><\/a>Add and Subtract Decimals Activity<\/h3>\n<p><strong>Decimal Dots<\/strong><br \/>\n<strong>Directions:<\/strong><br \/>\n1. Players take turns connecting two dots, each using a different color.<br \/>\n2. On your turn, connect two dots, vertically or horizontally. If you close a square around an expression, then evaluate the expression. If you do not close a square, your turn is over.<br \/>\n3. Continue playing until all expressions are evaluated.<br \/>\n4. The player with the most evaluated expressions wins!<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15682\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals 3\" width=\"678\" height=\"706\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.png 678w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3-288x300.png 288w\" sizes=\"(max-width: 678px) 100vw, 678px\" \/><\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_Chapter_Practice\"><\/a>Add and Subtract Decimals Chapter Practice<\/h3>\n<p><strong>3.1 Estimate the Sum or Differences.<\/strong><\/p>\n<p><strong>Estimate the sum or difference.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15683\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-1.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 1\" width=\"80\" height=\"68\" \/><br \/>\nAnswer:<br \/>\n741.26 + 103.75 = 845.31.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54493\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice.1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice.1\" width=\"202\" height=\"228\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15684\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-2.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 2\" width=\"60\" height=\"69\" \/><br \/>\nAnswer:<br \/>\n89.5 &#8211; 41.8 = 47.7.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54494\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice.2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice.2\" width=\"123\" height=\"131\" \/><\/p>\n<p>Question 3.<br \/>\n13.47 &#8211; 9.82<br \/>\nAnswer:<br \/>\n13.47 &#8211; 9.82 = 3.65.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54547\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice.3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice.3\" width=\"120\" height=\"103\" \/><\/p>\n<p>Question 4.<br \/>\n64.9 + 17.5<br \/>\nAnswer:<br \/>\n64.9 + 17.5 = 82.4.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54548\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice.4\" width=\"120\" height=\"176\" \/><\/p>\n<p>Question 5.<br \/>\n<strong>Number Sense<\/strong><br \/>\nDescartes estimates a difference by rounding each number to the nearest whole number. His estimate is 6. Which problems could he have estimated?<br \/>\n97.5 &#8211; 91.8<br \/>\n10.3 &#8211; 4.6<br \/>\n23.7 &#8211; 18.1<br \/>\n7.2 &#8211; 0.8<br \/>\nAnswer:<br \/>\nHis Problems of estimation to 6 are 97.5 &#8211; 91.8 and 7.2 &#8211; 0.8.<\/p>\n<p>Explanation:<br \/>\nFirst\u00a0 round the numbers to nearest whole number later , find the difference:<br \/>\n97.5 &#8211; 91.8 = 98 &#8211; 92 = 6<br \/>\n10.3 &#8211; 4.6 = 10 &#8211; 5 = 5<br \/>\n23.7 &#8211; 18.1 = 23 &#8211; 18 = 5<br \/>\n7.2 &#8211; 0.8 = 7 &#8211; 1 = 6<\/p>\n<p><strong>3.2 Use Models to Add or Subtract Decimals<\/strong><\/p>\n<p><strong>Make a quick sketch to find the sum or difference.<\/strong><br \/>\nQuestion 6.<br \/>\n0.27 + 0.19<br \/>\nAnswer:<br \/>\n0.27 + 0.19 = 0.46.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54754\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.2 Use Models to Add or Subtract Decimals-6\" width=\"599\" height=\"368\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-6.png 599w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-6-300x184.png 300w\" sizes=\"(max-width: 599px) 100vw, 599px\" \/><\/p>\n<p>Question 7.<br \/>\n2.52 &#8211; 1.36 = ______<br \/>\nAnswer:<br \/>\n2.52 &#8211; 1.36 = 1.16.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54755\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-7.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.2 Use Models to Add or Subtract Decimals-7\" width=\"609\" height=\"346\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-7.png 609w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.2-Use-Models-to-Add-or-Subtract-Decimals-7-300x170.png 300w\" sizes=\"(max-width: 609px) 100vw, 609px\" \/><\/p>\n<p><strong>3.3 Add Decimals<\/strong><\/p>\n<p><strong>Find the sum. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15685\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-8.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 8\" width=\"78\" height=\"68\" \/><br \/>\nAnswer:<br \/>\n10.36 + 0.29 = 10.65.<br \/>\n10.65 is reasonable.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54549\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals.4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals.4\" width=\"150\" height=\"187\" \/><br \/>\nCheck:<br \/>\n10.65 &#8211; 0.29<br \/>\n=10.36.<\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15686\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-9.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 9\" width=\"72\" height=\"67\" \/><br \/>\nAnswer:<br \/>\n461.2 + 78.5 = 539.7<br \/>\n539.7 is reasonable.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54551\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals.9.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals.9\" width=\"184\" height=\"174\" \/><br \/>\nCheck:<br \/>\n539.7 &#8211; 78.5<br \/>\n= 461.2.<\/p>\n<p>Question 10.<br \/>\n97.65 + 23.08 = _____<br \/>\nAnswer:<br \/>\n97.65 + 23.08 = 120.73.<br \/>\n120.73 is reasonable.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54552\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-10.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals-10\" width=\"177\" height=\"170\" \/><br \/>\nCheck:<br \/>\n120.73 &#8211; 23.08<br \/>\n= 97.65.<\/p>\n<p>Question 11.<br \/>\n63.39 + 4.05 = _____<br \/>\nAnswer:<br \/>\n63.39 + 4.05 = 67.44.<br \/>\n67.44 is a reasonable.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54553\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-11.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals-11\" width=\"163\" height=\"164\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-11.png 163w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-11-150x150.png 150w\" sizes=\"(max-width: 163px) 100vw, 163px\" \/><br \/>\nCheck:<br \/>\n67.44 &#8211; 4.05<br \/>\n=63.39.<\/p>\n<p>Question 12.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou want to conduct an experiment. You need 0.5 cup of water and the same amount of oil. How many cups of liquid do you need for the experiment?<br \/>\nAnswer:<br \/>\nTotal number of cups required of liquid = 1 cup.<\/p>\n<p>Explanation:<br \/>\nAmount of water required = 0.5 cup<br \/>\nAmount of oil required = 0.5 cup<br \/>\nTotal number of cups required of liquid = Amount of water required + Amount of oil required<br \/>\n= 0.5 + 0.5<br \/>\n= 1 cup<\/p>\n<p><strong>3.4 Subtract Decimals<\/strong><\/p>\n<p><strong>Find the difference. Then check your answer.<\/strong><br \/>\nQuestion 13.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15687\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-13.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 13\" width=\"77\" height=\"72\" \/><br \/>\nAnswer:<br \/>\n86.5 &#8211; 49.4 = 37.1.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54555\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-3.4-Subtract-Decimals-13.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals- 3.4 Subtract Decimals - 13\" width=\"199\" height=\"165\" \/><br \/>\nCheck:<br \/>\n37.1 + 49.4<br \/>\n= 86.5<\/p>\n<p>Question 14.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15688\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-14.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 14\" width=\"73\" height=\"73\" \/><br \/>\nAnswer:<br \/>\n37.82 &#8211; 5.07 = 32.75.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54557\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-3.4-Subtract-Decimals-14.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals- 3.4 Subtract Decimals - 14\" width=\"148\" height=\"152\" \/><br \/>\nCheck :<br \/>\n32.75 + 5.07<br \/>\n= 37.82.<\/p>\n<p>Question 15.<br \/>\n582.58 &#8211; 33.21 = _____<br \/>\nAnswer:<br \/>\n582.58 &#8211; 33.21 = 549.37.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54558\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-3.4-Subtract-Decimals-15.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals- 3.4 Subtract Decimals - 15\" width=\"162\" height=\"200\" \/><br \/>\nCheck:<br \/>\n549.37 + 33.21<br \/>\n= 582.58.<\/p>\n<p>Question 16.<br \/>\n99.2 &#8211; 8.6 = _____<br \/>\nAnswer:<br \/>\n99.2 &#8211; 8.6 = 90.6.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54560\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.3-Add-Decimals-3.4-Subtract-Decimals-16.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.3 Add Decimals- 3.4 Subtract Decimals - 16\" width=\"141\" height=\"164\" \/><br \/>\nCheck:<br \/>\n90.6 + 8.6<br \/>\n= 99.2.<\/p>\n<p><strong>3.5 Add and Subtract Decimals<\/strong><\/p>\n<p><strong>Evaluate. Check whether your answer is reasonable.<\/strong><br \/>\nQuestion 17.<br \/>\n9.28 &#8211; 5.4 &#8211; 2.75 = _____<br \/>\nAnswer:<br \/>\n9.28 &#8211; 5.4 &#8211; 2.75 = 1.13.<br \/>\n1.13 is reasonable.<\/p>\n<p>Explanation:<br \/>\n9.28 &#8211; 5.4 &#8211; 2.75 =\u00a0 ???<br \/>\n9.28 &#8211; 5.4 &#8211; 2.75 = 3.88 &#8211; 2.75 = 1.13.<br \/>\nCheck:<br \/>\n1.13 + 2.75 + 5.4<br \/>\n= 3.88 + 5.4<br \/>\n= 9.28.<\/p>\n<p>Question 18.<br \/>\n2 + 18.6 &#8211; 7.9 = ______<br \/>\nAnswer:<br \/>\n2 + 18.6 &#8211; 7.9 = 12.7.<br \/>\n12.7 is reasonable.<\/p>\n<p>Explanation:<br \/>\n2 + 18.6 &#8211; 7.9 = ???<br \/>\n2 + 18.6 &#8211; 7.9<br \/>\n= 20.6 &#8211; 7.9<br \/>\n= 12.7<br \/>\nCheck:<br \/>\n12.7 + 7.9 &#8211; 18.6<br \/>\n= 20.6 &#8211; 18.6<br \/>\n= 2<\/p>\n<p>Question 19.<br \/>\n26 &#8211; 0.8 + 13.1 = ______<br \/>\nAnswer:<br \/>\n26 &#8211; 0.8 + 13.1 = 38.3<br \/>\n38.3 is reasonable.<\/p>\n<p>Explanation:<br \/>\n26 &#8211; 0.8 + 13.1 = ???<br \/>\n26 &#8211; 0.8 + 13.1<br \/>\n= 25.2 + 13.1<br \/>\n= 38.3<\/p>\n<p>Check:<br \/>\n38.3 &#8211; 13.1 + 0.8<br \/>\n= 25.2 + 0.8<br \/>\n= 26<\/p>\n<p>Question 20.<br \/>\n1.72 + 4 + 35.68<br \/>\nAnswer:<br \/>\n1.72 + 4 + 35.68 = 41.4<br \/>\n41.4 is reasonable.<\/p>\n<p>Explanation:<br \/>\n1.72 + 4 + 35.68 = ???<br \/>\n1.72 + 4 + 35.68<br \/>\n= 5.72 + 35.68<br \/>\n= 41.4<\/p>\n<p>Check:<br \/>\n41.4 &#8211; 35.68 -4<br \/>\n= 5.72 &#8211; 4<br \/>\n= 1.72<\/p>\n<p>Question 21.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nHow many inches of snowfall Month Snowfall (inches)are recorded altogether?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15689\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-21.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 21\" width=\"239\" height=\"123\" \/><br \/>\nAnswer:<br \/>\nTotal Snowfall in all three months = 70.50 inches.<\/p>\n<p>Explanation:<br \/>\nSnowfall in the month of December = 27.5<br \/>\nSnowfall in the month of January = 30.75<br \/>\nSnowfall in the month of February = 12.25<br \/>\nTotal Snowfall in all three months = Snowfall in the month of December &#8211; Snowfall in the month of January &#8211; Snowfall in the month of February<br \/>\n= 27.5 + 30.75 + 12.25<br \/>\n= 58.25 + 12.25<br \/>\n= 70.50 inches.<\/p>\n<p><strong>3.6 Use Mental Maths to Add or Subtract Decimals<\/strong><\/p>\n<p><strong>Use mental math to find the sum or difference.<\/strong><br \/>\nQuestion 22.<br \/>\n6.3 + 2.98 + 5.7 = ______<br \/>\nAnswer:<br \/>\n6.3 + 2.98 + 5.7 = 14.98.<\/p>\n<p>Explanation:<br \/>\nGiven 6.3 + 2.98 + 5.7 =<br \/>\n6.3 and 5.7 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n6.3 + 2.98 + 5.7 = 2.98 + (6.3 + 5.7) Associative Property<br \/>\n= 2.98 + 12<br \/>\n= 14.98.<\/p>\n<p>Question 23.<br \/>\n9.1 + 4.57 + 8.03 = _____<br \/>\nAnswer:<br \/>\n9.1 + 4.57 + 8.03 = 21.7.<\/p>\n<p>Explanation:<br \/>\nGiven 9.1 + 4.57 + 8.03<br \/>\n4.57 and 8.03 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n9.1 + 4.57 + 8.03 = 9.1 + (4.57 + 8.03) Associative Property<br \/>\n= 9.1 + 12.6<br \/>\n= 21.7<\/p>\n<p>Question 24.<br \/>\n25.7 &#8211; 14.9 = _____<br \/>\nAnswer:<br \/>\n25.7 &#8211; 14.9 = 10.8.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54763\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.6 Use Mental Maths to Add or Subtract Decimals-24\" width=\"994\" height=\"304\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24.png 994w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24-300x92.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24-768x235.png 768w\" sizes=\"(max-width: 994px) 100vw, 994px\" \/><br \/>\nSubtract 0.1 more than 14.9 , so you must Add 0.1 to 10.7 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54765\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24..-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.6 Use Mental Maths to Add or Subtract Decimals-24..\" width=\"322\" height=\"237\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24..-1.png 322w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-24..-1-300x221.png 300w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><\/p>\n<p>Question 25.<br \/>\n9.24 &#8211; 2.67 = _____<br \/>\nAnswer:<br \/>\n9.24 &#8211; 2.67 = 6.57.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54767\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.6 Use Mental Maths to Add or Subtract Decimals-25\" width=\"1282\" height=\"368\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25.png 1282w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25-300x86.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25-1024x294.png 1024w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25-768x220.png 768w\" sizes=\"(max-width: 1282px) 100vw, 1282px\" \/><br \/>\nSubtract 0.03 more than 2.67 , so you must Add 0.03 to 6.54 to find the answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54769\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-25...png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.6 Use Mental Maths to Add or Subtract Decimals-25..\" width=\"190\" height=\"195\" \/><\/p>\n<p>Question 26.<br \/>\n<strong>Number Sense<\/strong><br \/>\nUse mental math to find the missing number.<br \/>\n9.2 + n + 2.5 = 15.8<br \/>\nAnswer:<\/p>\n<p>Explanation:<br \/>\nGiven 6.5 + 3.1 + 3.5,<br \/>\n6.5 and 3.5 are compatible numbers. Use addition properties to rewrite the problem.<br \/>\n6.5 + 3.1 + 3.5 = 3.1 + (6.5 + 3.5) Associative Property<br \/>\n= 3.1 + 10<br \/>\n= 13.1<\/p>\n<p><strong>3.7 Problem Solving: Money<\/strong><\/p>\n<p>Question 27.<br \/>\nNewton buys a board game for $9.99 and a pack of trading cards for $2.99. He gives the cashier a $20 bill. How much change does he receive?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15690\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-27.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 27\" width=\"134\" height=\"134\" \/><br \/>\nAnswer:<br \/>\nAmount of money change received = $7.02.<\/p>\n<p>Explanation:<br \/>\nCost of a board game = $9.99<br \/>\nCost of a pack of trading cards = $2.99<br \/>\nAmount of bills paid to cashier = $20<br \/>\nAmount of money change received = Amount of bills paid to cashier &#8211; ( Cost of a pack of trading cards + Cost of a board game\u00a0 )<br \/>\n= $20 &#8211; ( $9.99 + $2.99 )<br \/>\n= $20 &#8211; $12.98<br \/>\n= $7.02.<\/p>\n<p>Question 28.<br \/>\nDescartes has $378.97 in his bank account. He withdraws $59.50 one day and then deposits $20.44 the next day. How much money is in his bank account now?<br \/>\nAnswer:<br \/>\nAmount of money left in the bank account = $339.91.<\/p>\n<p>Explanation:<br \/>\nAmount of money Descartes has in his bank account= $378.97<br \/>\nAmount of money withdrawn = $59.50<br \/>\nAmount of money he deposited later = $20.44<br \/>\nAmount of money left in the bank account = Amount of money Descartes has in his bank account &#8211; Amount of money withdrawn +\u00a0 Amount of money he deposited later<br \/>\n= $378.97 &#8211; $59.50 + $20.44<br \/>\n= $319.47 + $20.44<br \/>\n= $339.91<\/p>\n<p>Question 29.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nA bowling alley charges $7.50 for each person to bowl and $2.25 to rent a pair of shoes. How much does it cost you and your friend to bowl and rent shoes?<br \/>\nAnswer:<br \/>\nAmount of money charged\u00a0 for me and my friend to bowl and rent shoes = $9.75.<\/p>\n<p>Explanation:<br \/>\nAmount of money charged for each person to bowl = $7.50<br \/>\nAmount of money charged as rent for a pair of shoes = $2.25<br \/>\nAmount of money charged\u00a0 for me and my friend to bowl and rent shoes = Amount of money charged for each person to bowl +<br \/>\nAmount of money charged as rent for a pair of shoes<br \/>\n= $7.50 + $2.25<br \/>\n= $9.75.<\/p>\n<p>Question 30.<br \/>\n<strong>Reasoning<\/strong><br \/>\nYour friend wants to buy a magic kit for $18.75. He has two $10 bills, one $5 bill, four $1 bills, and 3 quarters. Make a table to find three ways your friend could pay for the magic kit.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15691\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-30.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals chp 30\" width=\"559\" height=\"169\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-30.png 559w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-chp-30-300x91.png 300w\" sizes=\"(max-width: 559px) 100vw, 559px\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54793\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Reasoning-30.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-3.6 Use Mental Maths to Add or Subtract Decimals-Reasoning-30\" width=\"979\" height=\"335\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Reasoning-30.png 979w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Reasoning-30-300x103.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-3.6-Use-Mental-Maths-to-Add-or-Subtract-Decimals-Reasoning-30-768x263.png 768w\" sizes=\"(max-width: 979px) 100vw, 979px\" \/><\/p>\n<p>Explanation:<br \/>\nCost of the a magic kit = $18.75<br \/>\nNumber of $10 bills my friend has = 2 = $10 \u00d7 2 = $ 20.<br \/>\nNumber of $5 bills my friend has = 1 = $5 \u00d7 1 = $5.<br \/>\nNumber of $1 bills my friend has = 4 = $ 1 \u00d7 4 = $ 4.<br \/>\nNumber of Quarters my friend has = 3<br \/>\nConversion:<br \/>\n1 Quarter = 0.25 dollar<br \/>\n=&gt; 3 Quarter = 3 \u00d7 0.25 = $0.75.<br \/>\nAmount of money my friend has = Number of $10 bills my friend has + Number of $5 bills my friend has + Number of $1 bills my friend has + Number of Quarters my friend has<br \/>\n= $20 + $5 + $4 + $0.75<br \/>\n= $ 25 + $4 + $0.75<br \/>\n= $29 + $0.75<br \/>\n= $29.75.<\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_Cumulative_Practice\"><\/a>Add and Subtract Decimals Cumulative Practice<\/h3>\n<p>Question 1.<br \/>\nUsing the order of operations, which operation should you perform last to evaluate the expression?<br \/>\n(4 \u00d7 6) + (100 \u00f7 10) &#8211; (3 + 4)<br \/>\nA. addition<br \/>\nB. subtraction<br \/>\nC. multiplication<br \/>\nD. division<br \/>\nAnswer:<br \/>\nA. addition.<\/p>\n<p>Explanation:<br \/>\nGiven Equation:<br \/>\nAccording to DMAS rule:<br \/>\nFirst Division:<br \/>\n=&gt; (4 \u00d7 6) + (100 \u00f7 10) &#8211; (3 + 4)<br \/>\n=&gt; (4 \u00d7 6) + 10 &#8211; (3 + 4)<br \/>\nSecond Multiplication:<br \/>\n=&gt; (4 \u00d7 6) + 10 &#8211; (3 + 4)<br \/>\n=&gt; 24 + 10 &#8211; (3 + 4)<br \/>\nThird Addition:<br \/>\n=&gt; 24 + 10 &#8211; (3 + 4)<br \/>\n=&gt; 24 + 10 + 1<br \/>\n=&gt; 34 +1<br \/>\n=&gt; 35.<\/p>\n<p>Question 2.<br \/>\nWhich numbers round to 4 when rounded to the nearest whole number?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15692\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-2.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 2\" width=\"537\" height=\"96\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-2.png 537w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-2-300x54.png 300w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><br \/>\nAnswer:<br \/>\n4.03, 3.98, 4.1 are the numbers round to 4 when rounded to the nearest whole number.<\/p>\n<p>Explanation:<br \/>\nRound all options to nearest whole number:<br \/>\n4.03 &#8211;\u00a0 4<br \/>\n4.5\u00a0 &#8211; 5<br \/>\n44.2 &#8211; 44<br \/>\n3.98 &#8211; 4<br \/>\n3.46 &#8211; 3<br \/>\n4.1 &#8211; 4<\/p>\n<p>Question 3.<br \/>\nWhich bike trail does the figure show?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15693\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-3.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 3\" width=\"606\" height=\"193\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-3.png 606w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-3-300x96.png 300w\" sizes=\"(max-width: 606px) 100vw, 606px\" \/><br \/>\nA. River Run<br \/>\nB. Straight and Fast<br \/>\nC. Twist and Turn<br \/>\nD. Wood Way<\/p>\n<p>Answer:<br \/>\nTotal distance from A to E = 4.5 km<br \/>\n=&gt; River Run bike trail the figure shows.<\/p>\n<p>Explanation:<br \/>\nFirst add all the distances given in the map:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54804\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-Add and Subtract Decimals Cumulative Practice-3\" width=\"915\" height=\"337\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-3.png 915w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-3-300x110.png 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-3-768x283.png 768w\" sizes=\"(max-width: 915px) 100vw, 915px\" \/><br \/>\nDistance from A to B = 1.75 km<br \/>\nDistance from B to C = 1.0 km<br \/>\nDistance from C to D = 0.5 km<br \/>\nDistance from D to E = 0.75 km<br \/>\nDistance from E to A = 0.5 km<br \/>\nTotal distance from A to E = Distance from A to B + Distance from B to C + Distance from C to D + Distance from D to E<br \/>\nDistance from E to A<br \/>\n= 1.75 + 1.0\u00a0 + 0.5\u00a0 + \u00a00.75\u00a0 + 0.5<br \/>\n= 2.75 + + 0.5\u00a0 + \u00a00.75\u00a0 + 0.5<br \/>\n= 3.0 + \u00a00.75\u00a0 + 0.5<br \/>\n= 3.75 + 0.5<br \/>\n= 4.25 km.<\/p>\n<p>Question 4.<br \/>\nWhat is 0.045 written as a fraction?<br \/>\nA. \\(\\frac{45}{100}\\)<br \/>\nB. \\(\\frac{1,000}{45}\\)<br \/>\nC. \\(\\frac{45}{1,000}\\)<br \/>\nD. \\(\\frac{450}{1,000}\\)<br \/>\nAnswer:<br \/>\nC. \\(\\frac{45}{1,000}\\)<\/p>\n<p>Explanation:<br \/>\n0.045 fraction= 45 \u00f7 1000.<\/p>\n<p>Question 5.<br \/>\nA recipe calls for 3 eggs. Newton makes 5 batches of the recipe, and Descartes makes 2 batches of the recipe. Which expressions can you use to determine how many eggs Newton and Descartes use in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15694\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-5.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 5\" width=\"500\" height=\"98\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-5.png 500w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-5-300x59.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><br \/>\nAnswer:<br \/>\nThe Expression used = (5 \u00d7 3) + ( 2 \u00d7 2 ).<\/p>\n<p>Explanation:<br \/>\nA recipe calls for 3 eggs.<br \/>\nNumber of recipe batches Newton makes = 5<br \/>\n=&gt;Number of eggs used by Newton = 5 \u00d7 3<br \/>\nNumber of recipe batches Descartes makes = 2<br \/>\n=&gt;Number of eggs used by\u00a0 Descartes = 2 \u00d7 2<br \/>\nNumber of eggs both used = Number of eggs used by Newton + Number of eggs used by\u00a0 Descartes<br \/>\n= (5 \u00d7 3) + ( 2 \u00d7 2 )<br \/>\n= 15 + 4<br \/>\n= 19.<\/p>\n<p>Question 6.<br \/>\nWhat is the difference of 97.63 and 4.98?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15695\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-6.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 6\" width=\"79\" height=\"69\" \/><br \/>\nAnswer:<br \/>\n97.63 -4.98 = 92.65.<\/p>\n<p>Explanation:<br \/>\nDifference:<br \/>\n97.63 -4.98 =???<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54811\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-6.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-Add and Subtract Decimals Cumulative Practice-6\" width=\"247\" height=\"192\" \/><\/p>\n<p>Question 7.<br \/>\nWhat is 60.25 written in word form?<br \/>\nA. sixty twenty-five<br \/>\nB. sixty and twenty-five tenths<br \/>\nC. sixty and twenty-five<br \/>\nD. sixty and twenty-five hundredths<br \/>\nAnswer:<br \/>\nD. sixty and twenty-five hundredths<\/p>\n<p>Explanation:<br \/>\nNumber name of 60.25 = ????<\/p>\n<p>Question 8.<br \/>\nFind 55.6 &#8211; 3.97.<br \/>\nA. 1.59<br \/>\nB. 51.63<br \/>\nC. 52.37<br \/>\nD. 59.57<br \/>\nAnswer:<br \/>\n55.6 &#8211; 3.97 = 51.63.<\/p>\n<p>Explanation:<br \/>\n55.6 &#8211; 3.97 = ???<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54812\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-Cumulative-Practice-8.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice-Add and Subtract Decimals Cumulative Practice-8\" width=\"176\" height=\"162\" \/><\/p>\n<p>Question 9.<br \/>\nWhat is the value of the expression?<br \/>\n[21 \u00f7 (3 + 4)] &#8211; 2<br \/>\nA. 9<br \/>\nB. 4 R1<br \/>\nC. 1<br \/>\nD. 2<br \/>\nAnswer:<br \/>\nC. 1<\/p>\n<p>Explanation:<br \/>\n[21 \u00f7 (3 + 4)] &#8211; 2<br \/>\n= [21 \u00f7 (7)] &#8211; 2<br \/>\n= 3 &#8211; 2<br \/>\n=1<\/p>\n<p>Question 10.<br \/>\nWhich statement correctly compares the decimals?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15696\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-10.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 10\" width=\"479\" height=\"99\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-10.png 479w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-10-300x62.png 300w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><br \/>\nAnswer:<br \/>\nA. 0.1 &gt; 0.111.<\/p>\n<p>Explanation:<br \/>\n<img src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-10.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 10\" \/><\/p>\n<p>Question 11.<br \/>\nWhat is the value of n?<br \/>\nn &#8211; 9.02 = 3.85<br \/>\nA. 12.87<br \/>\nB. 5.17<br \/>\nC. 3.87<br \/>\nD. 12<br \/>\nAnswer:<br \/>\nn = 12.87.<\/p>\n<p>Explanation:<br \/>\nn = ??<br \/>\nn &#8211; 9.02 = 3.85<br \/>\nn = 3.85 + 9.02<br \/>\nn = 12.87.<\/p>\n<p>Question 12.<br \/>\nWhich property is shown?<br \/>\n35 + (15 + 7) = (35 + 15) + 7<br \/>\nA. Associative Property of Addition<br \/>\nB. Commutative Property<br \/>\nC. Distributive Property<br \/>\nD. Associative Property of Multiplication<br \/>\nAnswer:<br \/>\nA. Associative Property of Addition.<\/p>\n<p>Explanation:<br \/>\nThe associative property states that you can add or multiply regardless of how the numbers are grouped.<br \/>\n35 + (15 + 7) = (35 + 15) + 7<\/p>\n<p>Question 13.<br \/>\nNewton estimates a sum by rounding each number to the nearest ten. His estimate is 140. Which problems could he have estimated?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15697\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-13.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 13\" width=\"492\" height=\"96\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-13.png 492w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-13-300x59.png 300w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><br \/>\nAnswer:<br \/>\n123.5 + 19.6, 87.6 + 50.4, 65.43 + 71.59 problem he have estimated.<\/p>\n<p>Explanation:<br \/>\nFirst, find all sums of given Equations:<br \/>\n123.5 + 19.6 = 124 + 20 = 144.<br \/>\n87.6 + 50.4\u00a0 = 88 + 50 = 138.<br \/>\n65.43 + 71.59 = 65 + 72 = 137.<br \/>\n98.03 + 34.56 = 98 + 34 = 132.<\/p>\n<p>Question 14.<br \/>\nWhat is five hundred four thousand, eleven written in standard form?<br \/>\nA. 54,011<br \/>\nB. 54,110<br \/>\nC. 504,110<br \/>\nD. 504,011<br \/>\nAnswer:<\/p>\n<p>Explanation:<\/p>\n<p>Question 15.<br \/>\nWhich expressions have a value of 8?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15698\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-15.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 15\" width=\"514\" height=\"94\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-15.png 514w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-15-300x55.png 300w\" sizes=\"(max-width: 514px) 100vw, 514px\" \/><br \/>\nAnswer:<br \/>\n30 \u00f7 ( 5 \u00d7 2 ) + 5, 4 \u00d7 ( 5 &#8211; 3 ) , (16 \u00f7 8) + ( 3 \u00d7 2 )\u00a0 are expressions having a value of 8.<\/p>\n<p>Explanation:<br \/>\nFirst, solve the equations:<br \/>\n30 \u00f7 ( 5 \u00d7 2 ) + 5 = 30 \u00f7 10 + 5 = 3 + 5 = 8.<br \/>\n55 &#8211; 7 \u00f7 6 = 55\u00a0 &#8211; 1.167 = 53.833.<br \/>\n4 \u00d7 ( 5 &#8211; 3 ) = 4 \u00d7 2 = 8.<br \/>\n(16 \u00f7 8) + ( 3 \u00d7 2 ) = 2 + 6 = 8.<\/p>\n<p>Question 16.<br \/>\nDescartes wins a $50 gift card to a sporting goods store. He uses the card to buy two baseballs for $1.79 each, a baseball glove for $14.99, and a baseball bat for $12.25. About how much money is left on his gift card?<br \/>\nA. $21<br \/>\nB. $19<br \/>\nC. $31<br \/>\nD. $18<br \/>\nAnswer:<br \/>\nTotal amount left on his gift card= $19.18.<\/p>\n<p>Explanation:<br \/>\nAmount of gift card won for a sporting goods store = $50<br \/>\nCost of the two baseballs\u00a0 = $1.79 each = &gt; 2 \u00d7 1.79 = $3.58<br \/>\nCost of a baseball glove = $14.99<br \/>\nCost of a baseball bat = $12.25<br \/>\nTotal amount left on his gift card= Amount of gift card won for a sporting goods store &#8211; (Cost of the two baseballs + Cost of a baseball glove + Cost of a baseball bat )<br \/>\n= $50 &#8211; ( $3.58 + $14.99 + $12.25)<br \/>\n= $50 &#8211; ( $18.57 + $12.25)<br \/>\n= $50 &#8211; $30.82<br \/>\n= $19.18.<\/p>\n<p>Question 17.<br \/>\nWhat is the value of 4\u00d7 10<sup>5<\/sup>?<br \/>\nA. 45<br \/>\nB. 400,000<br \/>\nC. 40,000<br \/>\nD. 200<br \/>\nAnswer:<br \/>\n4\u00d7 10<sup>5\u00a0 \u00a0<\/sup>= B. 400,000.<\/p>\n<p>Explanation:<br \/>\n4\u00d7 10<sup>5<br \/>\n<\/sup>= 4 \u00d7 10 \u00d710 \u00d7 10 \u00d7 10 \u00d7 10<br \/>\n= 4 \u00d7 100000<br \/>\n= 400,000<\/p>\n<p>Question 18.<br \/>\nThe dimensions of two rectangles are shown.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15699\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-18.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals cp 18\" width=\"376\" height=\"129\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-18.png 376w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-cp-18-300x103.png 300w\" sizes=\"(max-width: 376px) 100vw, 376px\" \/><br \/>\nPart A Write an expression to determine how much greater the area of the green rectangle is than the area of the yellow rectangle.<br \/>\nPart B Evaluate the expression.<br \/>\nPart C Explain how you used order of operations to evaluate the expression.<br \/>\nAnswer:<br \/>\nPart A : Area of the green rectangle\u00a0 &gt; Area of the yellow rectangle<br \/>\n9ft \u00d7 8ft &gt;\u00a0 7ft \u00d7 5ft<\/p>\n<p>Part B: Evaluate the expression.<br \/>\n9ft \u00d7 8ft &gt;\u00a0 7ft \u00d7 5ft<br \/>\n=&gt; 72ft &gt; 35ft<\/p>\n<p>Part C:<br \/>\nI used the order of DMAS rule.<br \/>\nDivision, Multiplication, Addition and Subtraction order of operations to evaluate the expression<\/p>\n<p>Explanation:<br \/>\nPart A:<br \/>\nLength of the green rectangle = 9ft<br \/>\nWidth of the green rectangle = 8ft<br \/>\nArea of the green rectangle = Length of the green rectangle \u00d7 Width of the green rectangle<br \/>\n= 9ft \u00d7 8ft<br \/>\n= 72 ft.<br \/>\nLength of the yellow rectangle = 7ft<br \/>\nWidth of the yellow rectangle = 5ft<br \/>\nArea of the yellow rectangle = Length of the yellow rectangle \u00d7 Width of the yellow rectangle<br \/>\n= 7ft \u00d7 5ft<br \/>\n= 35ft<\/p>\n<p>Part C: Explain how you used order of operations to evaluate the expression.<br \/>\nI used the order of DMAS rule.<br \/>\nDivision, Multiplication, Addition and Subtraction order of operations to evaluate the expression.<\/p>\n<h3><a id=\"Add_and_Subtract_Decimals_STEAM_Performance_Task\"><\/a>Add and Subtract Decimals STEAM Performance Task<\/h3>\n<p>Students can buy pencils, notebooks, and other supplies at your school\u2019s student store. The table below shows the money in the student store account.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15700\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-1.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals spt 1\" width=\"225\" height=\"170\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15701\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-2.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals spt 2\" width=\"490\" height=\"238\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-2.png 490w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-2-300x146.png 300w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/p>\n<p>Question 1.<br \/>\nLine 1 shows how much money was in the account at the start of the school year. Line 2 shows a payment of $85.89 for supplies. Complete the account balance for Line 2.<br \/>\nAnswer:<br \/>\nAmount of money left in the account = $14.11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54821\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice- Add and Subtract Decimals STEAM Performance Task-1\" width=\"575\" height=\"309\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-1.png 575w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-1-300x161.png 300w\" sizes=\"(max-width: 575px) 100vw, 575px\" \/><\/p>\n<p>Explanation:<br \/>\nAmount in the account at the start of the school year = $100.00<br \/>\nAmount in the account used for supplies = $85.89<br \/>\nAmount of money left in the account = Amount in the account at the start of the school year &#8211; Amount in the account used for supplies =\u00a0$100.00 &#8211; $85.89<br \/>\n= $ 14.11<\/p>\n<p>Question 2.<br \/>\nThe store has forty-four dollars and thirty cents in sales for the first week and thirty-two dollars and twelve cents in sales for the second week. The sales each week are deposited into the student store account. Fill in the deposits and balances for Lines 3 and 4.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54823\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-2.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice- Add and Subtract Decimals STEAM Performance Task-2\" width=\"566\" height=\"310\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-2.png 566w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-2-300x164.png 300w\" sizes=\"(max-width: 566px) 100vw, 566px\" \/><\/p>\n<p>Explanation:<br \/>\nAmount of money received in sales for the first week = forty-four dollars and thirty cents = $44.30<br \/>\nAmount of money received in sales for the second week = thirty-two dollars and twelve cents = $ 32.12<\/p>\n<p>Question 3.<br \/>\nThe balance after the third week of sales is $115.68. How much money did the store have in sales during the third week? Fill in the deposit and balance for Line 5.<br \/>\nAnswer:<br \/>\nAmount of money received in sales for the third week\u00a0 = $25.15.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-54826\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-3.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice- Add and Subtract Decimals STEAM Performance Task-3\" width=\"564\" height=\"301\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-3.png 564w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-3-300x160.png 300w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/p>\n<p>Explanation:<br \/>\nAmount of money balance after the third week of sales = $115.68<br \/>\nAmount of money received in sales for the first week = forty-four dollars and thirty cents = $44.30<br \/>\nAmount of money received in sales for the second week = thirty-two dollars and twelve cents = $ 32.12<br \/>\nAmount of money left in the account = $14.11<br \/>\nAmount of money received in sales for the third week + Amount of money received in sales for the first week + Amount of money received in sales for the second week + Amount of money left in the account = Amount of money balance after the third week of sales<br \/>\n= Amount of money received in sales for the third week\u00a0 + $44.30 + $32.12 + $14.11 = $115.68<br \/>\n=&gt; Amount of money received in sales for the third week\u00a0 + $76.42 + $14.11 = $115.68<br \/>\n=&gt; Amount of money received in sales for the third week + $90.53 = $115.68<br \/>\n=&gt; Amount of money received in sales for the third week\u00a0 = $115.68 &#8211; $90.53<br \/>\n=&gt;Amount of money received in sales for the third week\u00a0 = $25.15.<\/p>\n<p>You are in charge of purchasing supplies for the student store. All of the supplies for the student store are purchased and then sold at a higher price so the store can earn a profit.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15702\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-3.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals spt 3\" width=\"360\" height=\"251\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-3.png 360w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-3-300x209.png 300w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><br \/>\nQuestion 4.<br \/>\nYou want to buy 300 more pencils. You find two different quantities to buy.<br \/>\na. Which pencils will you buy to get $35.99$19.99the best value? Justify your answer.<br \/>\nb. You pay about $0.24 for each pencil. How much do you think the store should charge for each pencil to earn a profit? Explain.<br \/>\nc. How much profit does the store earn from selling 100 pencils using your recommended price? Explain.<br \/>\nd. You want to buy some notebooks for a total of $25.24 and 300 pencils. You have a $5 coupon. How much do you spend on notebooks and pencils?<br \/>\ne. Write out the check to buy the supplies. What is the account balance now? Fill in the payment and balance for line 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-15703\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-4.png\" alt=\"Big Ideas Math Solutions Grade 5 Chapter 3 Add and Subtract Decimals spt 4\" width=\"657\" height=\"281\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-4.png 657w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Solutions-Grade-5-Chapter-3-Add-and-Subtract-Decimals-spt-4-300x128.png 300w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><br \/>\nAnswer:<br \/>\na) I would like to purchase 300 pencils from Pencil assortment A because the cost of each pencil is lesser than Pencil assortment B.<\/p>\n<p>b)Cost the pencil to be sold = $0.30 because 0.06 is the profit range of 4 % out of 0.24.<\/p>\n<p>c) The profit store owns from selling 100 pencils using your recommended price is $30.<\/p>\n<p>d) Cost of the Notebooks and pencils = $115.24<\/p>\n<p>e) <img loading=\"lazy\" class=\"alignnone size-full wp-image-54825\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-4.png\" alt=\"Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add and Subtract Decimals Chapter Practice- Add and Subtract Decimals STEAM Performance Task-4\" width=\"588\" height=\"311\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-4.png 588w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals-3.7-Add-and-Subtract-Decimals-Chapter-Practice-Add-and-Subtract-Decimals-STEAM-Performance-Task-4-300x159.png 300w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><\/p>\n<p>Explanation:<br \/>\na) Cost of 150pencil from Pencil assortment A = $ 35.99<br \/>\n=&gt; Cost of each pencil from Pencil assortment A = $35.99 \u00f7 150 = $ 0.2399<br \/>\nCost of 75pencil from Pencil assortment B = $19.99<br \/>\n=&gt; Cost of each pencil from Pencil assortment B = $19.99 \u00f7 75 = $0.2665<\/p>\n<p>b) Cost of pencil is purchased by me = $0.24<br \/>\nCost the pencil to be sold = $0.24 + $0.06 = $0.30<br \/>\nBecause 0.06 is the profit range of 4 % out of 0.24.<\/p>\n<p>c) Cost of each pencils to be sold = $0.30<br \/>\nCost of 100 pencils to be sold = $0.30 \u00d7 100 = $30.<\/p>\n<p>d) Total Cost of the Notebooks =\u00a0$25.24<br \/>\nCost of 300 pencils = $0.30 \u00d7300 = $90<br \/>\nAmount of coupon used to pay = $5<br \/>\nCost of the Notebooks and pencils = Total Cost of the Notebooks + Cost of 300 pencils<br \/>\n= $25.24 + $90<br \/>\n= $115.24.<\/p>\n<p>e) Current account balance = $115.68<\/p>\n<p><em>Conclusion:<\/em><\/p>\n<p>Hope the information provided in the above pdf is helpful for all the students in Grade 5. Download Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals for free of cost. Keep in touch with us to get the latest updates of all Grade 5 chapters.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>All topics in Grade 5 Chapter 3 Add and Subtract Decimals are provided below. Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals topics are given with problems, answers, explanations, practice tests, quiz, and, etc. Take every option we provided for you to prepare well for the exam. Students can easily become &#8230; <a title=\"Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals\" class=\"read-more\" href=\"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-5-chapter-3\/\" aria-label=\"More on Big Ideas Math Answers Grade 5 Chapter 3 Add and Subtract Decimals\">Read more<\/a><\/p>\n","protected":false},"author":9,"featured_media":89708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[4],"tags":[],"jetpack_featured_media_url":"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2020\/12\/Big-Ideas-Math-Answers-Grade-5-Chapter-3-Add-and-Subtract-Decimals.png","_links":{"self":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/15577"}],"collection":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/comments?post=15577"}],"version-history":[{"count":1,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/15577\/revisions"}],"predecessor-version":[{"id":90245,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/15577\/revisions\/90245"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media\/89708"}],"wp:attachment":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media?parent=15577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/categories?post=15577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/tags?post=15577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}