{"id":20196,"date":"2022-04-01T15:25:35","date_gmt":"2022-04-01T09:55:35","guid":{"rendered":"https:\/\/ccssmathanswers.com\/?p=20196"},"modified":"2022-04-07T11:08:59","modified_gmt":"2022-04-07T05:38:59","slug":"big-ideas-math-answers-grade-2-chapter-10","status":"publish","type":"post","link":"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-2-chapter-10\/","title":{"rendered":"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000"},"content":{"rendered":"<p>Big Ideas Math Book Grade 2 Chapter 10 Subtract Numbers within 1,000 Answers are provided in a comprehensive manner for better understanding. Interested students have to solve as many questions as possible using the <a href=\"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-2\/\">Big Ideas Math Answers Grade 2<\/a> Ch 10 and become pro at solving subtraction problems below 1,000. So that you can understand the concept and answer any kind of questions framed on the Subtraction of Numbers within 1,000.<\/p>\n<h2>Big Ideas Math 2nd Grade Answer Key Chapter 10 Subtract Numbers within 1,000<\/h2>\n<p>BIM 2nd Grade Chapter 10 Subtract Numbers within 1,000 Answer Key is useful for the students who are willing to be perfect in Math skills and also parents for guiding their kid to have the best score in the written exam. This chapter includes questions on vocabulary, Subtract 10 and 100, Use a Number Line to Subtract Hundreds and Tens, Use a Number Line to Subtract Three-Digit Numbers, Use Compensation to Subtract Three-Digit Numbers, Use Models to Subtract Three-Digit Numbers, Subtract Three-Digit Numbers, Subtract from Numbers That Contain Zeros, Use Addition to Subtract and Explain Subtraction Strategies.<\/p>\n<p>Learn the different ways of finding the difference of two numbers within 1,000. By solving the questions on Big Ideas Math Grade 2 Chapter 10 Subtract Numbers within 1,000 Textbook, you can be able to find subtraction of any two numbers and explain how to use different subtraction strategies. Hence Download Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 pdf and learn the fundamentals in an easy manner.<\/p>\n<p><strong>Lesson 1 Subtract 10 and 100<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.1_Subtract_10_and_100\">Lesson 10.1 Subtract 10 and 100<\/a><\/li>\n<li><a href=\"#Subtract_10_and_100_Homework_&amp;_Practice_10.1\">Subtract 10 and 100 Homework &amp; Practice 10.1<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 2 Use a Number Line to Subtract Hundreds and Tens<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.2_Use_a_Number_Line_to_Subtract_Hundreds_and_Tens\">Lesson 10.2 Use a Number Line to Subtract Hundreds and Tens<\/a><\/li>\n<li><a href=\"#Use_a_Number_Line_to_Subtract_Hundreds_and_Tens_Homework_&amp;_Practice_10.2\">Use a Number Line to Subtract Hundreds and Tens Homework &amp; Practice 10.2<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 3 Use a Number Line to Subtract Three-Digit Numbers<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.3_Use_a_Number_Line_to_Subtract_Three_Digit_Numbers\">Lesson 10.3 Use a Number Line to Subtract Three-Digit Numbers<\/a><\/li>\n<li><a href=\"#Use_a_Number_Line_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.3\">Use a Number Line to Subtract Three-Digit Numbers Homework &amp; Practice 10.3<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 4 Use Compensation to Subtract Three-Digit Numbers<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.4_Use_Compensation_to_Subtract_Three_Digit_Numbers\">Lesson 10.4 Use Compensation to Subtract Three-Digit Numbers<\/a><\/li>\n<li><a href=\"#Use_Compensation_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.4\">Use Compensation to Subtract Three-Digit Numbers Homework &amp; Practice 10.4<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 5 Use Models to Subtract Three-Digit Numbers<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.5_Use_Models_to_Subtract_Three_Digit_Numbers\">Lesson 10.5 Use Models to Subtract Three-Digit Numbers<\/a><\/li>\n<li><a href=\"#Use_Models_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.5\">Use Models to Subtract Three-Digit Numbers Homework &amp; Practice 10.5<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 6 Subtract Three-Digit Numbers<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.6_Subtract_Three_Digit_Numbers\">Lesson 10.6 Subtract Three-Digit Numbers<\/a><\/li>\n<li><a href=\"#Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.6\">Subtract Three-Digit Numbers Homework &amp; Practice 10.6<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 7 Subtract from Numbers That Contain Zeros<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.7_Subtract_from_Numbers_That_Contain_Zeros\">Lesson 10.7 Subtract from Numbers That Contain Zeros<\/a><\/li>\n<li><a href=\"#Subtract_from_Numbers_That_Contain_Zeros_Homework_&amp;_Practice_10.7\">Subtract from Numbers That Contain Zeros Homework &amp; Practice 10.7<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 8 Use Addition to Subtract<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.8_Use_Addition_to Subtract\">Lesson 10.8 Use Addition to Subtract<\/a><\/li>\n<li><a href=\"#Use_Addition_to_Subtract_Homework_&amp;_Practice_10.8\">Use Addition to Subtract Homework &amp; Practice 10.8<\/a><\/li>\n<\/ul>\n<p><strong>Lesson 9 Explain Subtraction Strategies<\/strong><\/p>\n<ul>\n<li><a href=\"#Lesson_10.9_Explain_Subtraction_Strategies\">Lesson 10.9 Explain Subtraction Strategies<\/a><\/li>\n<li><a href=\"#Explain_Subtraction_Strategies_Homework_&amp;_Practice_10.9\">Explain Subtraction Strategies Homework &amp; Practice 10.9<\/a><\/li>\n<\/ul>\n<p><strong>Performance Task<\/strong><\/p>\n<ul>\n<li><a href=\"#Subtract_Numbers_within_1,000_Performance_Task\">Subtract Numbers within 1,000 Performance Task<\/a><\/li>\n<li><a href=\"#Subtract_Numbers_within_1,000_Chapter_Practice\">Subtract Numbers within 1,000 Chapter Practice<\/a><\/li>\n<\/ul>\n<h2>Big Ideas Math Book 2nd Grade Answer Key Chapter 10 Subtract Numbers within 1,000<\/h2>\n<h3>Subtract Numbers within 1,000 Vocabulary<\/h3>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-20206\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-1.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 v 1\" width=\"224\" height=\"184\" \/><br \/>\n<strong>Organize It<\/strong><br \/>\nUse the review words to complete the graphic organizer<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20207\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 v 2\" width=\"554\" height=\"131\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2.png 554w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2-300x71.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>Answer:<br \/>\n8 is the sum and 5 is the difference.<\/p>\n<p>Explanation:<br \/>\nBy adding 5+3 we will get the sum of those two digits which is 8 and, by subtracting 8-3 we will get the difference of those two digits which is 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-21855\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2\" width=\"554\" height=\"131\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2-1.png 554w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-2-1-300x71.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p><strong>Define It<\/strong><br \/>\nMatch.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20208\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 v 3\" width=\"579\" height=\"328\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3.png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3-300x170.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-21869\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3\" width=\"579\" height=\"328\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3-1.png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-3-1-300x170.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><br \/>\nRegrouping in subtraction is a method of interchanging one ten into ten ones. This regrouping of subtraction is used to work out the different subtraction problems.<br \/>\nCompensation is a strategy used to make a ten to help add and subtract numbers.<\/p>\n<h3><a id=\"Lesson_10.1_Subtract_10_and_100\"><\/a>Lesson 10.1 Subtract 10 and 100<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Model 251. Make a quick sketch of your model.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20197\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-1.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 1\" width=\"249\" height=\"124\" \/><br \/>\n251<br \/>\nAnswer:<br \/>\nTo model 251 which is 100+100+50+1.<\/p>\n<p>Explanation:<br \/>\nTo model 251 which is 100+100+50+1, we will take a table of 10\u00d710 by which we can build 100 blocks. So for 251, we will take two 10\u00d710 blocks and one 10\u00d75 blocks for which we can build 50 blocks and a single block.<img loading=\"lazy\" class=\"alignnone wp-image-22431 size-full\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-4.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-4\" width=\"561\" height=\"353\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-4.png 561w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-v-4-300x189.png 300w\" sizes=\"(max-width: 561px) 100vw, 561px\" \/><\/p>\n<p>Model 10 less than 251. Make a quick sketch of your model.<br \/>\n251 \u2212 10 = _____<\/p>\n<p>Answer:<br \/>\n251-10= 241<\/p>\n<p>Explanation:<br \/>\nTo model 10 less than 251, we will subtract 251 &#8211; 10 which is 241. So to model 241, we will expand that 241 as<br \/>\n100 + 100 + 40 + 1 so we will take two 10\u00d710 blocks for which we and one 10\u00d74 block and a single block.<\/p>\n<p>Model 100 less than 251. Make a quick sketch of your model.<br \/>\n251 &#8211; 100 = ______<br \/>\nAnswer:<br \/>\n251 &#8211; 100= 151.<\/p>\n<p>Explanation:<br \/>\nTo model 100 less than 251, we will subtract 251 &#8211; 100 which is 251. So to model 151, we will expand that 151 as<br \/>\n100 + 50 + 1 so we will take one 10\u00d710 block for which we and one 10\u00d75 block and a single block.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\n278 \u2212 10 = _____<br \/>\n278 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 278 \u2212 10 is 268.<br \/>\nThe difference of 278 \u2212 100 is 178.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 278-10, we will pick the tens digit number in 278 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n7 &#8211; 1= 6<br \/>\ntherefore 278 &#8211; 10= 268.<br \/>\nAnd to find the difference of 278-100, we will pick the hundred&#8217;s digit number in 278 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n2-1= 1<br \/>\ntherefore 278-100= 178.<\/p>\n<p>Question 2.<br \/>\n451 \u2212 10 = ______<br \/>\n451 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 451 \u2212 10 is 441.<br \/>\nThe difference of 451 \u2212 100 is 351.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 451-10, we will pick the tens digit number in 451 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5 &#8211; 1= 4<br \/>\ntherefore 451 &#8211; 10= 441.<br \/>\nAnd to find the difference of 451-100, we will pick the hundred&#8217;s digit number in 451 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n4-1= 3<br \/>\ntherefore 451-100= 351.<\/p>\n<p>Question 3.<br \/>\n623 \u2212 10 = ______<br \/>\n623 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 623 \u2212 10 is 623.<br \/>\nThe difference of 623 \u2212 100 is 523.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 623-10, we will pick the ten&#8217;s digit number in 623 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n2 &#8211; 1= 3<br \/>\ntherefore 623 &#8211; 10= 613.<br \/>\nAnd to find the difference of 623-100, we will pick the hundred&#8217;s digit number in 623 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n6-1= 5<br \/>\ntherefore 623-100= 523.<\/p>\n<p>Question 4.<br \/>\n116 \u2212 10 = _____<br \/>\n116 \u2212 100 = ______<br \/>\nAnswer:<br \/>\nThe difference of 116 \u2212 10 is 106.<br \/>\nThe difference of 116 \u2212 100 is 16.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 116-10, we will pick the ten&#8217;s digit number in 116 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n1 &#8211; 1= 0<br \/>\ntherefore 116 &#8211; 10= 106.<br \/>\nAnd to find the difference of 116-100, we will pick the hundred&#8217;s digit number in 116 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n1-1= 0<br \/>\ntherefore 116-100= 016.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p>Question 5.<br \/>\n100 &#8211; 10 = ______<br \/>\nAnswer:<br \/>\nThe difference of 100 &#8211; 10 is 90.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 100-10, we will pick the hundred&#8217;s digit number in 100 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n10 &#8211; 1= 9<br \/>\ntherefore 100 &#8211; 10= 90.<\/p>\n<p>Question 6.<br \/>\n599 &#8211; 100 = ______<br \/>\nAnswer:<br \/>\nThe difference of 599-100 is 499.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 599 -100, we will pick the hundred&#8217;s digit number in 599 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5-1= 4<br \/>\ntherefore 599-100= 499.<\/p>\n<p>Question 7.<br \/>\n614 \u2212 10 = _____<br \/>\nAnswer:<br \/>\nThe difference of 614 -10 is 604.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 614 -10, we will pick the hundred&#8217;s digit number in 614 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n1-1= 0<br \/>\ntherefore 614 -10= 604.<\/p>\n<p>Question 8.<br \/>\n890 &#8211; 10 = ______<br \/>\nAnswer:<br \/>\nThe difference of 890 -10 is 880.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 890 -10, we will pick the ten&#8217;s digit number in 890 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n9-1= 8<br \/>\ntherefore 890 -10= 880.<\/p>\n<p>Question 9.<br \/>\n768 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 768 -100 is 668.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 768 -100, we will pick the hundred&#8217;s digit number in 768 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n7-1= 0<br \/>\ntherefore 768 -100= 668.<\/p>\n<p>Question 10.<br \/>\n523 &#8211; 10 = _____<br \/>\nAnswer:<br \/>\nThe difference of 523 -10 is 513.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 523 -10, we will pick the ten&#8217;s digit number in 523 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n2-1= 1<br \/>\ntherefore 523 -10= 513.<\/p>\n<p>Question 11.<br \/>\n362 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 362 -100 is 262.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 362 -100, we will pick the hundred&#8217;s digit number in 362 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n3 -1= 2<br \/>\ntherefore 362 -100= 262 .<\/p>\n<p>Question 12.<br \/>\n396 &#8211; 10 = _____<br \/>\nAnswer:<br \/>\nThe difference of 396 -10 is 386.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 396 -10, we will pick the ten&#8217;s digit number in 386 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n9-1= 8<br \/>\ntherefore 396 -10= 386.<\/p>\n<p>Question 13.<br \/>\n604 \u2212 10 = _____<br \/>\nAnswer:<br \/>\nThe difference of 604 -10 is 594.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 604 -10, we will pick the ten&#8217;s digit number in 604 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n60 &#8211; 1= 59<br \/>\ntherefore 604 -10= 594.<\/p>\n<p>Question 14.<br \/>\n799 &#8211; 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 614 -10 is 604.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 614 -10, we will pick the ten&#8217;s digit number in 614 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n1-1= 0<br \/>\ntherefore 614 -10= 604.<\/p>\n<p>Question 15.<br \/>\n449 \u2212 _____ = 349<br \/>\nAnswer:<br \/>\nThe difference of 449 &#8211; 100 is 349.<\/p>\n<p>Explanation:<br \/>\nLet the blank be X,<br \/>\nso 449- X= 349,<br \/>\nThen X = 449-349<br \/>\nX = 100.<br \/>\nLet us cross-check that 100 is correct or not<br \/>\n449-100= 349.<br \/>\nSo 100 is correct.<\/p>\n<p>Question 16.<br \/>\n_____ &#8211; 10 = 227<br \/>\nAnswer:<br \/>\nThe difference of 237-10 is 227.<\/p>\n<p>Explanation:<br \/>\nLet the blank be X,<br \/>\nso X &#8211; 10 = 227,<br \/>\nThen X = 227 + 10<br \/>\nX = 237.<br \/>\nLet us cross-check that 237 is correct or not<br \/>\n237-10= 227.<br \/>\nSo 237 is correct.<\/p>\n<p>Question 17.<br \/>\n<strong>Number Sense<\/strong><br \/>\nUse each number once to complete the equations.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20198\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-2.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 2\" width=\"461\" height=\"61\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-2.png 461w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-2-300x40.png 300w\" sizes=\"(max-width: 461px) 100vw, 461px\" \/><br \/>\n_____ &#8211; 10 = ______<br \/>\n_____ &#8211; _____ = 460<br \/>\nAnswer:<br \/>\n470 &#8211; 10 = 460<br \/>\n560 &#8211; 10= 550.<br \/>\n560 &#8211; 100 = 460.<br \/>\n100 &#8211; 10= 90.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s take 470,<br \/>\nthen 470 &#8211; 10 = 460<br \/>\nand 470 &#8211; 10 = 460.<br \/>\nLet&#8217;s take 560,<br \/>\nthen 560 &#8211; 10= 550.<br \/>\nand 560 &#8211; 100 = 460.<br \/>\nLet&#8217;s take 100<br \/>\n100 &#8211; 10= 90.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>You have $106. You spend $10. How much money do you have left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20199\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-3.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 3\" width=\"173\" height=\"86\" \/><br \/>\nSubtraction equation:<br \/>\n$ _____<br \/>\nAnswer:<br \/>\nSubtraction equation is<br \/>\n$106 &#8211; $10= $96.<\/p>\n<p>Explanation:<br \/>\nAs we have $106 and $10 was spend, so the remaining money left are<br \/>\n$106 &#8211; $10= $96.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 18.<br \/>\nYou have 334 tickets. You exchange 100 of them for a prize. How many tickets do you have left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20200\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-4.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 4\" width=\"128\" height=\"89\" \/><br \/>\n_____ tickets<br \/>\nAnswer:<br \/>\nThe number of tickets left is 234 tickets.<\/p>\n<p>Explanation:<br \/>\nAs we have 334 tickets and in that 100 of them are exchanged for a prize, so the remaining tickets are<br \/>\n334 &#8211; 100= 234 tickets are remaining.<\/p>\n<p>Question 19.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYou score 745 points in a video game. You lose some points. Now you have 645. How many points did you lose?<br \/>\n_____ points<br \/>\nAnswer:<br \/>\nThe number of points lost is 100 points.<\/p>\n<p>Explanation:<br \/>\nThe score in a video game is 745 points and after losing some points, we have 645 points. So the number of points lost is 745 &#8211; 645= 100 points.<\/p>\n<p>Question 20.<br \/>\nHow can you mentally subtract 10 or 100 from a number?<br \/>\n____________________<br \/>\n____________________<br \/>\nAnswer:<br \/>\nWe will perform pick the ten&#8217;s digit number or hundred digit number. Then we will subtract both the numbers which we have picked with the given values. For example, if we take 452 &#8211; 10, we will pick the ten&#8217;s digit number in 452 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5 &#8211; 1= 4<br \/>\ntherefore 452 -10=442.<\/p>\n<h3><a id=\"Subtract_10_and_100_Homework_&amp;_Practice_10.1\"><\/a>Subtract 10 and 100 Homework &amp; Practice 10.1<\/h3>\n<p>Question 1.<br \/>\n642 \u2212 10 = ______<br \/>\nAnswer:<br \/>\nThe difference of 642-10 is 632.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 642 -10, we will pick the ten&#8217;s digit number in 642 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n4 &#8211; 1= 3<br \/>\ntherefore 642 -10= 632.<\/p>\n<p>Question 2.<br \/>\n416 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 416 -100 is 316.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 416 -100, we will pick the hundred&#8217;s digit number in 416 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n4 &#8211; 1= 3<br \/>\ntherefore 416 -100= 316.<\/p>\n<p>Question 3.<br \/>\n890 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 890 -100 is 790.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 890 -100, we will pick the hundred&#8217;s digit number in 890 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n8 &#8211; 1= 7<br \/>\ntherefore 890 -100= 790.<\/p>\n<p>Question 4.<br \/>\n371 \u2212 10 = _____<br \/>\nAnswer:<br \/>\nThe difference of 371 -10 is 361.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 371 -10, we will pick the ten&#8217;s digit number in 371 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n7 &#8211; 1= 6<br \/>\ntherefore 371-10= 361.<\/p>\n<p>Question 5.<br \/>\n501 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 501 -100 is 401.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 501 -100, we will pick the hundred&#8217;s digit number in 501 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5 &#8211; 1= 4<br \/>\ntherefore 501 -100= 401.<\/p>\n<p>Question 6.<br \/>\n955 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 955 -100 is 855.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 955 &#8211; 100, we will pick the hundred&#8217;s digit number in 955 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n9 &#8211; 1= 8<br \/>\ntherefore 955 &#8211; 100= 855.<\/p>\n<p>Question 7.<br \/>\n203 \u2212 10 = ____<br \/>\nAnswer:<br \/>\nThe difference of 203 &#8211; 10 is 193.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 203 &#8211; 10, we will pick the ten&#8217;s digit number in 203 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n20 &#8211; 1= 19<br \/>\ntherefore 203 -10= 193.<\/p>\n<p>Question 8.<br \/>\n888 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference of 888 -100 is 788.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 888 &#8211; 100, we will pick the hundred&#8217;s digit number in 888 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n8 &#8211; 1= 7<br \/>\ntherefore 888 &#8211; 100= 788.<\/p>\n<p>Question 9.<br \/>\n690 \u2212 10 = ____<br \/>\nAnswer:<br \/>\nThe difference of 690 &#8211; 10 is 680.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 690 &#8211; 10, we will pick the ten&#8217;s digit number in 690 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n9 &#8211; 1= 8<br \/>\ntherefore 690 &#8211; 10= 680.<\/p>\n<p>Question 10.<br \/>\n107 \u2212 10 = ____<br \/>\nAnswer:<br \/>\nThe difference of 107 &#8211; 10 is 97.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 107 -10, we will pick the hundred&#8217;s digit number in 107 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n10 &#8211; 1= 9<br \/>\ntherefore 107 &#8211; 10= 97.<\/p>\n<p>Question 11.<br \/>\n723 \u2212 ____ = 713<br \/>\nAnswer:<br \/>\nThe difference of 723 &#8211; 10 is 713.<\/p>\n<p>Explanation:<br \/>\nLet the empty blank be X,<br \/>\nthen 723 &#8211; X = 713<br \/>\nX = 723 &#8211; 713<br \/>\n= 10<br \/>\nTherefore X= 10.<\/p>\n<p>Question 12.<br \/>\n____ \u2212 100 = 433<br \/>\nAnswer:<br \/>\nThe difference of 533 &#8211; 100 is 433.<\/p>\n<p>Explanation:<br \/>\nLet the empty blank be X,<br \/>\nthen X &#8211; 100 = 433<br \/>\nX = 433 + 100<br \/>\n= 533<br \/>\nTherefore X= 533.<\/p>\n<p>Question 13.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nYour friend says that 678 \u2212 100 = 668. Is your friend correct? Explain.<br \/>\n____________________<br \/>\n____________________<br \/>\nAnswer:<br \/>\nNo, my friend is not correct.<\/p>\n<p>Explanation:<br \/>\nMy friend is not correct, because to find the difference of 678 &#8211; 100, we will pick the hundred&#8217;s digit number in 678 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n6 &#8211; 1= 5<br \/>\ntherefore 678 &#8211; 100= 578.<br \/>\nAs 678 &#8211; 100= 578, my friend is not correct.<\/p>\n<p>Question 14.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20201\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-5.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 5\" width=\"263\" height=\"42\" \/><br \/>\nAnswer:<br \/>\n582 &#8211; 10 &lt; 683 &#8211; 100.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-23499\" style=\"font-weight: inherit;\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-5-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-5\" width=\"263\" height=\"42\" \/><br \/>\nAs 582 &#8211; 10=<span style=\"font-size: 16px;\">\u00a0572 and 683 &#8211; 100 = 583, so 583 is greater than 572. Which is<br \/>\n<\/span>582 &#8211; 10 &lt; 683 &#8211; 100.<\/p>\n<p>Question 15.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20202\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-6.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 6\" width=\"262\" height=\"47\" \/><br \/>\nAnswer:<br \/>\n985 &#8211; 100 = 895 &#8211; 10.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-23500\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-6-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-6\" width=\"262\" height=\"47\" \/><\/p>\n<p>As 985 &#8211; 100=<span style=\"font-size: 16px;\"> 885 and 895 &#8211; 10 = 885, and here 885 is equal to 885. Which is<br \/>\n<\/span>985 &#8211; 100 = 895 &#8211; 10.<\/p>\n<p>Question 16.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nNewton sends out 233 invitations. 100 people respond to the invitation. How many people have not responded yet?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20203\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-7.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 7\" width=\"110\" height=\"87\" \/><br \/>\n_______ people<br \/>\nAnswer:<br \/>\nThe number of people who didn&#8217;t respond is 133 people.<\/p>\n<p>Explanation:<br \/>\nAs Newton sends 233 invitations and in that 233 invitations 100 people responded, so the number of people who didn&#8217;t respond is 233 &#8211; 100 = 133 people.<\/p>\n<p>Question 17.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\n648 runners sign up for a marathon. 638 runners finish the race. How many runners do not finish?<br \/>\n______ runners<br \/>\nAnswer:<br \/>\n10 runners.<\/p>\n<p>Explanation:<br \/>\nThe total number of runners sign up for a marathon is 648 and of that 638 runners finish the race. So the number of persons who didn&#8217;t finish the race is 648-638= 10 runners.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 18.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20204\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-8.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 8\" width=\"177\" height=\"63\" \/><br \/>\n____rows of ____<br \/>\n____ + ____ = ____<br \/>\nAnswer:<br \/>\n2 rows of 5 triangles<\/p>\n<p>Explanation:<br \/>\nIn the above image, we can see two rows of five triangles. And the total number of triangles in the above image is<br \/>\n5+5= 10.<\/p>\n<p>Question 19.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20205\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.1-9.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.1 9\" width=\"98\" height=\"91\" \/><br \/>\n____rows of ____<br \/>\n____ + ____ = ____<br \/>\nAnswer:<br \/>\n3 rows of 3 circles.<br \/>\n3+3+3= 9.<\/p>\n<p>Explanation:<br \/>\nIn the above image, we can see three rows of three circles. And the total number of circles are<br \/>\n3+3+3= 9.<\/p>\n<h3><a id=\"Lesson_10.2_Use_a_Number_Line_to_Subtract_Hundreds_and_Tens\"><\/a>Lesson 10.2 Use a Number Line to Subtract Hundreds and Tens<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Skip count back by tens five times on the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20209\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 1\" width=\"530\" height=\"54\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1.png 530w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1-300x31.png 300w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><br \/>\n555 &#8211; _____ = ______<\/p>\n<p>Answer:<br \/>\nThe difference between 555-50 is 505.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 555 and then count back tens five times which is 10\u00d75= 50 on the number line. So the number line is<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23529\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1-1.png\" alt=\"\" width=\"525\" height=\"105\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1-1.png 525w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-1-1-300x60.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>Skip count back by hundreds five times on the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20210\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-2.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 2\" width=\"528\" height=\"63\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-2.png 528w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-2-300x36.png 300w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><br \/>\n555 &#8211; ____ = ______<br \/>\nAnswer:<br \/>\n555 &#8211; 500= 55.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 555 and then count back hundreds five times which is 100\u00d75= 500 on the number line. So the number line is<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-23533\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2\" width=\"552\" height=\"139\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2.png 552w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-300x76.png 300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\n520 \u2212 330 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20211\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 3\" width=\"537\" height=\"59\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3.png 537w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3-300x33.png 300w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 520 \u2212 330 is 190.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 520 and count back a hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n520 &#8211; 300= 220 and then we will count back tens three times, which is 3\u00d710= 30 and the value will be<br \/>\n220-30= 190.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-24447 size-full\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3-1-e1610028051488.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3\" width=\"551\" height=\"160\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3-1-e1610028051488.png 551w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-3-1-e1610028051488-300x87.png 300w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/><\/p>\n<p>Question 2.<br \/>\n259 \u2212 170 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20212\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 4\" width=\"540\" height=\"50\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4.png 540w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4-300x28.png 300w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 259 &#8211; 170 is 89.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 259 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n259 &#8211; 100= 159 and then we will count back tens seven times, which is 7\u00d710= 70 and the value will be<br \/>\n159 &#8211; 70= 89.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-24452 size-full\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4-1-e1610028110602.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4\" width=\"529\" height=\"155\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4-1-e1610028110602.png 529w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-4-1-e1610028110602-300x88.png 300w\" sizes=\"(max-width: 529px) 100vw, 529px\" \/><\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p>Question 3.<br \/>\n640 &#8211; 150 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20213\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 5\" width=\"537\" height=\"52\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5.png 537w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-300x29.png 300w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 640 &#8211; 150 is 490.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 640 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n640 &#8211; 100= 540 and then we will count back tens five times, which is 5\u00d710= 50 and the value will be<br \/>\n540 &#8211; 50= 490.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26393\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5\" width=\"517\" height=\"114\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-1.png 517w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-1-300x66.png 300w\" sizes=\"(max-width: 517px) 100vw, 517px\" \/><\/p>\n<p>Question 4.<br \/>\n453 &#8211; 210 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20214\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-6.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 6\" width=\"536\" height=\"51\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-6.png 536w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-6-300x29.png 300w\" sizes=\"(max-width: 536px) 100vw, 536px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 453 &#8211; 210 is 243.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 453 and count back a hundred one time which is 2\u00d7100= 200 and the value will be<br \/>\n453 &#8211; 200= 253 and then we will count back ten one time, which is 1\u00d710= 10, and the value will be<br \/>\n253 &#8211; 10= 243.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-26402 size-full\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-2-e1610389208945.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-6\" width=\"565\" height=\"124\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-2-e1610389208945.png 565w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-2-e1610389208945-300x66.png 300w\" sizes=\"(max-width: 565px) 100vw, 565px\" \/><\/p>\n<p>Question 5.<br \/>\n329 &#8211; 220 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20215\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-7.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 7\" width=\"528\" height=\"53\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-7.png 528w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-7-300x30.png 300w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 329 &#8211; 220 is 109.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 329 and count back a hundred two times which is 2\u00d7100= 200 and the value will be<br \/>\n329 &#8211; 200= 129 and then we will count back tens two times, which is 2\u00d710= 20 and the value will be<br \/>\n129 &#8211; 20= 109.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26406\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-3.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-7\" width=\"515\" height=\"129\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-3.png 515w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-5-3-300x75.png 300w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><\/p>\n<p>Question 6.<br \/>\n<strong>Reasoning<\/strong><br \/>\nComplete the number line and the equation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20216\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 8\" width=\"421\" height=\"166\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8.png 421w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8-300x118.png 300w\" sizes=\"(max-width: 421px) 100vw, 421px\" \/><br \/>\n_____ &#8211; _____ = _____<br \/>\nAnswer:<br \/>\n752 &#8211; 100= 652,<br \/>\n652 &#8211; 100= 552,<br \/>\n552 &#8211; 40= 512.<\/p>\n<p>Explanation:<br \/>\nGiven in the above image that 752 &#8211; 100= 652 and 652 &#8211; 100= 552, and in the next step we can see the result as 512. So the empty box be X and the equation is<br \/>\n552 &#8211; X= 512,<br \/>\nX= 552-512<br \/>\n= 40.<br \/>\nSo the value of X is 40.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26407\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8\" width=\"421\" height=\"166\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8-1.png 421w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-8-1-300x118.png 300w\" sizes=\"(max-width: 421px) 100vw, 421px\" \/><\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>A batting cage has 360 baseballs. There are 130 fewer softballs are there?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20217\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-9.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 9\" width=\"119\" height=\"79\" \/><br \/>\nSubtraction equation:<br \/>\nModel:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20218\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 10\" width=\"537\" height=\"58\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10.png 537w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-300x32.png 300w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><br \/>\n____ softballs<br \/>\nAnswer:<br \/>\n230 softballs.<\/p>\n<p>Explanation:<br \/>\nThe total number of baseballs in the batting cages is 360 baseballs and there are 130 fewer softballs. So the total number of softballs is 360 &#8211; 130= 230 softballs.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26410\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10\" width=\"525\" height=\"99\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-1.png 525w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-1-300x57.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 7.<br \/>\nA crocodile weighs 535 pounds. A kangaroo weighs 340 pounds less than the crocodile. How much does the kangaroo weigh?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20219\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-11.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 11\" width=\"205\" height=\"126\" \/><br \/>\n______ pounds<br \/>\nAnswer:<br \/>\nThe weight of the kangaroo is 195 pounds.<\/p>\n<p>Explanation:<br \/>\nThe weight of the crocodile is 535 pounds and the weight of the kangaroo is 340 pounds less than the crocodile, which means<br \/>\n535 &#8211; 340= 195 pounds.<br \/>\nSo the weight of the kangaroo is 195 pounds.<\/p>\n<p>Question 8.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nA train has 850 seats. A plane has 390 fewer seats than the train. A bus has 370 fewer seats than the plane. How many seats does the bus have?<br \/>\n_____ seats<br \/>\nAnswer:<br \/>\nThe number of seats on the bus is 90 seats.<\/p>\n<p>Explanation:<br \/>\nAs the train has 850 seats, and a plane has 390 fewer seats than the train, which means 850 &#8211; 390= 460. So the total number of seats on the train is 460 seats. And a bus has 370 fewer seats than the plane, which means<br \/>\n460 &#8211; 370= 90 seats. So the number of seats on the bus is 90 seats.<\/p>\n<h3><a id=\"Use_a_Number_Line_to_Subtract_Hundreds_and_Tens_Homework_&amp;_Practice_10.2\"><\/a>Use a Number Line to Subtract Hundreds and Tens Homework &amp; Practice 10.2<\/h3>\n<p>Question 1.<br \/>\n670 \u2212 520 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20220\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-12.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 12\" width=\"527\" height=\"67\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-12.png 527w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-12-300x38.png 300w\" sizes=\"(max-width: 527px) 100vw, 527px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 670 &#8211; 520= 150.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 670 and count back a hundred five times which is 5\u00d7100= 500 and the value will be<br \/>\n670 &#8211; 500= 170 and then we will count back tens two times, which is 2\u00d710= 20 and the value will be<br \/>\n170 &#8211; 20= 150.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26416\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-2.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-11\" width=\"530\" height=\"124\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-2.png 530w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-2-300x70.png 300w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><\/p>\n<p>Question 2.<br \/>\n749 \u2212 150 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20221\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-13.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 13\" width=\"536\" height=\"67\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-13.png 536w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-13-300x38.png 300w\" sizes=\"(max-width: 536px) 100vw, 536px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 749 &#8211; 150 is 599.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 749 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n749 &#8211; 100= 649 and then we will count back tens five times, which is 5\u00d710= 50 and the value will be<br \/>\n649 &#8211; 50= 599.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26420\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-3.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-12\" width=\"543\" height=\"124\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-3.png 543w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-3-300x69.png 300w\" sizes=\"(max-width: 543px) 100vw, 543px\" \/><\/p>\n<p>Question 3.<br \/>\n583 \u2212 320 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20222\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-14.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 14\" width=\"516\" height=\"52\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-14.png 516w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-14-300x30.png 300w\" sizes=\"(max-width: 516px) 100vw, 516px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 583 &#8211; 320 is 263.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 583 and count back a hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n583 &#8211; 300= 283 and then we will count back tens two times, which is 2\u00d710= 20 and the value will be<br \/>\n283 &#8211; 20= 263.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-26421\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-4.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-13\" width=\"522\" height=\"107\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-4.png 522w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-10-4-300x61.png 300w\" sizes=\"(max-width: 522px) 100vw, 522px\" \/><\/p>\n<p>Question 4.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWrite the equation shown by the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20223\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-15.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 15\" width=\"438\" height=\"110\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-15.png 438w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-15-300x75.png 300w\" sizes=\"(max-width: 438px) 100vw, 438px\" \/><br \/>\n_____ &#8211; _____ = ______<br \/>\nAnswer:<br \/>\nThe equation is 645 &#8211; 120= 525.<\/p>\n<p>Explanation:<br \/>\nIn the above image, we can see the starting point at 645 and it was counted back to 100 then the value will be 645 &#8211; 100= 545. Then from 545, it was counted back tens two times which is 10\u00d72= 20. Then the value will be<br \/>\n545 &#8211; 20= 525.<\/p>\n<p>Question 5.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nA bee pollinates 955 flowers in a day. A second bee pollinates 150 fewer flowers. How many flowers does the second bee pollinate?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20224\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-16.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 16\" width=\"112\" height=\"86\" \/><br \/>\n_____ \ufb02owers<br \/>\nAnswer:<br \/>\n855 flowers.<\/p>\n<p>Explanation:<br \/>\nThe number of flowers pollinated by the bee is 955 flowers and the second bee pollinates 150 fewer flowers, which means 955 &#8211; 150= 805 flowers were pollinated by the second bee.<\/p>\n<p>Question 6.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nA library has 990 books. It has 250 fewer movies than books. It has 410 fewer magazines than movies. How many magazines does the library have?<br \/>\n______ magazines<br \/>\nAnswer:<br \/>\n330 magazines.<\/p>\n<p>Explanation:<br \/>\nThe number of books in a library is 990 books and 250 fewer movies than books, which is 990 &#8211; 250= 740 movies. And 410 fewer magazines than movies, which means 740 &#8211; 410= 330 magazines.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20225\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-17.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.2 17\" width=\"396\" height=\"220\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-17.png 396w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.2-17-300x167.png 300w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><br \/>\nHow many students chose computer?<br \/>\n_____ students<br \/>\nAnswer:<br \/>\n3 students.<\/p>\n<p>Explanation:<br \/>\nIn the given graph the number of students who choose computer is 3 students.<\/p>\n<h3><a id=\"Lesson_10.3_Use_a_Number_Line_to_Subtract_Three_Digit_Numbers\"><\/a>Lesson 10.3 Use a Number Line to Subtract Three-Digit Numbers<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use each difference as the starting number in the next equation.<br \/>\n425 \u2212 200 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20226\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 1\" width=\"538\" height=\"374\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1.png 538w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1-300x209.png 300w\" sizes=\"(max-width: 538px) 100vw, 538px\" \/><\/p>\n<p>Answer:<br \/>\n425 &#8211; 200= 225,<br \/>\n225 &#8211; 20= 205,<br \/>\n205 &#8211; 2= 203.<\/p>\n<p>Explanation:<br \/>\nGiven the equation is 425 &#8211; 200. To represent the given equation in the number line, we will start from 425 and then count back hundred two times which is 2\u00d7100= 200 and the value will be<br \/>\n425 &#8211; 200= 225 and then we will count back tens two times, which is 2\u00d710= 20 and the value will be<br \/>\n225 &#8211; 20= 205 and count back one two times, which is 1\u00d72= 2and the value will be 205 &#8211; 2= 203.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-26992\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1\" width=\"553\" height=\"433\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1-1.png 553w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-1-1-300x235.png 300w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/><\/p>\n<p>How does this help you find 425 \u2212 222?<br \/>\n______________________<br \/>\n________________________<br \/>\nAnswer:<\/p>\n<p>Explanation:<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\n674 \u2212 236 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20227\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 2\" width=\"527\" height=\"62\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2.png 527w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2-300x35.png 300w\" sizes=\"(max-width: 527px) 100vw, 527px\" \/><br \/>\nAnswer:<br \/>\n674 &#8211; 236= 438.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 674 and count back hundred two times which is 2\u00d7100= 200 and the value will be<br \/>\n674 &#8211; 200= 474 and then we will count back tens three times, which is 3\u00d710= 30 and the value will be<br \/>\n474 &#8211; 30= 444 and then we will count back one six times, which is 6\u00d71= 6, and the value will be 444 &#8211; 6 = 438.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-27007\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2\" width=\"512\" height=\"126\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2-1.png 512w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-2-1-300x74.png 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/p>\n<p>Question 2.<br \/>\n438 \u2212162 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20228\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 3\" width=\"525\" height=\"43\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3.png 525w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3-300x25.png 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 438 &#8211; 162 is 276.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 438 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n438 &#8211; 100= 338 and then we will count back tens six times, which is 6\u00d710= 60 and the value will be<br \/>\n338 &#8211; 60= 278 and then we will count back one two times, which is 2\u00d71= 2, and the value will be 278 &#8211; 2 = 276. And the difference between 438 &#8211; 162 is 276.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p>Question 3.<br \/>\n534 \u2212 311 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20229\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 4\" width=\"523\" height=\"48\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4.png 523w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4-300x28.png 300w\" sizes=\"(max-width: 523px) 100vw, 523px\" \/><br \/>\nAnswer:<br \/>\nExplanation:<br \/>\nLet&#8217;s start from 438 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n438 &#8211; 100= 338 and then we will count back tens six times, which is 6\u00d710= 60 and the value will be<br \/>\n338 &#8211; 60= 278 and then we will count back one two times, which is 2\u00d71= 2, and the value will be 278 &#8211; 2 = 276. And the difference between 438 &#8211; 162 is 276.<\/p>\n<p>Question 4.<br \/>\n745 \u2212 109 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20230\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-5.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 5\" width=\"534\" height=\"57\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-5.png 534w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-5-300x32.png 300w\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><br \/>\nAnswer:<\/p>\n<p>Question 5.<br \/>\n436 \u2212 84 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20231\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-6.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 6\" width=\"542\" height=\"54\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-6.png 542w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-6-300x30.png 300w\" sizes=\"(max-width: 542px) 100vw, 542px\" \/><br \/>\nAnswer:<\/p>\n<p>Question 6.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWrite the equation shown by the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20232\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-7.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 7\" width=\"417\" height=\"117\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-7.png 417w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-7-300x84.png 300w\" sizes=\"(max-width: 417px) 100vw, 417px\" \/><br \/>\n____ &#8211; _____ = _____<br \/>\nAnswer:<br \/>\n678 &#8211; 354= 324.<\/p>\n<p>Explanation:<br \/>\nIn the above image, we can see the starting point at 678 and it was counted back to 300 then the value will be 678 &#8211; 300= 378. Then from 378, it was counted back 50 which is 378 &#8211; 50= 328. And then it was counted back to 4\u00a0 then the value is 328 &#8211; 4= 324.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>Your school recycles 762 bottles. 245 are glass. The rest are plastic. How many bottles are plastic?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20233\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-8.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 8\" width=\"131\" height=\"95\" \/><br \/>\nSubtraction equation:<br \/>\nModel:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20234\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 9\" width=\"534\" height=\"39\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9.png 534w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9-300x22.png 300w\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><br \/>\n_____ bottles<br \/>\nAnswer:<br \/>\n517 bottles.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-28582\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9\" width=\"530\" height=\"121\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9-1.png 530w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-9-1-300x68.png 300w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><br \/>\nThe number of bottles recycled by the school is 762 bottles and in that 245 are glass. So the number of plastic bottles is 762 &#8211; 245= 517 bottles.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 7.<br \/>\nA squirrel collects 619 nuts for the winter. 421 are acorns. The rest are walnuts. How many walnuts are there?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20235\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-10.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 10\" width=\"76\" height=\"76\" \/><br \/>\n_____ walnuts<br \/>\nAnswer:<br \/>\n198 walnuts.<\/p>\n<p>Explanation:<br \/>\nThe number of nuts was collected by the squirrel in the winter is 619 nuts and in that 421 are acorns, and the rest of all are walnuts, which means 619 &#8211; 421= 198 walnuts.<\/p>\n<p>Question 8.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYou have 384 photos. You put your photos into two photo albums. Each album can hold up to 208 photos. How many photos can you put in each album? Explain.<br \/>\n_____ photos in Album 1 _____ photos in Album 2<br \/>\n_________________________<br \/>\n________________________<br \/>\nAnswer:<br \/>\n208 photos in Album 1 and 176 photos in album 2.<\/p>\n<p>Explanation:<br \/>\nThe number of photos we have is 384 photos and those photos were put into two albums and each album can hold 208 photos, which means we can put a total of 208+208= 416 photos. As we have 384 photos, so 208 photos we can put in one album and 384 &#8211; 208 = 176 photos in another album.<\/p>\n<h3><a id=\"Use_a_Number_Line_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.3\"><\/a>Use a Number Line to Subtract Three-Digit Numbers Homework &amp; Practice 10.3<\/h3>\n<p>Question 1.<br \/>\n953 \u2212 328 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20236\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 11\" width=\"529\" height=\"66\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11.png 529w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11-300x37.png 300w\" sizes=\"(max-width: 529px) 100vw, 529px\" \/><br \/>\nAnswer:<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-28585\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11\" width=\"521\" height=\"127\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11-1.png 521w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-11-1-300x73.png 300w\" sizes=\"(max-width: 521px) 100vw, 521px\" \/><br \/>\nLet&#8217;s start from 953 and count back a hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n953 &#8211; 300= 653 and then we will count back tens three times, which is 3\u00d710= 30 and the value will be<br \/>\n474 &#8211; 30= 444 and then we will count back one six times, which is 6\u00d71= 6, and the value will be 444 &#8211; 6 = 438.<\/p>\n<p>Question 2.<br \/>\n674 \u2212 218 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20237\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-12.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 12\" width=\"533\" height=\"56\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-12.png 533w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-12-300x32.png 300w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><br \/>\nAnswer:<br \/>\n674 &#8211; 218= 456.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29090\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3\" width=\"521\" height=\"107\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3-1.png 521w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-3-1-300x62.png 300w\" sizes=\"(max-width: 521px) 100vw, 521px\" \/><br \/>\nLet&#8217;s start from 674 and count back hundred two times which is 2\u00d7100= 200 and the value will be<br \/>\n674 &#8211; 200= 474 and then we will count back tens one time, which is 1\u00d710= 10 and the value will be<br \/>\n474 &#8211; 10= 464 and then we will count back one eight times, which is 8\u00d71= 8, and the value will be 474 &#8211; 8 = 456.<\/p>\n<p>Question 3.<br \/>\n594 \u2212 107 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20238\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-13.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 13\" width=\"530\" height=\"51\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-13.png 530w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-13-300x29.png 300w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><br \/>\nAnswer:<br \/>\n594 &#8211; 107= 487.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29117\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4\" width=\"524\" height=\"133\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4-1.png 524w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-4-1-300x76.png 300w\" sizes=\"(max-width: 524px) 100vw, 524px\" \/><br \/>\nLet&#8217;s start from 594 and count back a hundred one time which is 1\u00d7100= 100 and the value will be<br \/>\n594 &#8211; 100= 494 and then we will count back one seven times, which is 7\u00d71= 7, and the value will be 494 &#8211; 7 = 487.<\/p>\n<p>Question 4.<br \/>\n<strong>Structure<\/strong><br \/>\nUse the number lines to show 531 \u2212 396 two ways.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20239\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-14.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 14\" width=\"521\" height=\"89\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-14.png 521w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-14-300x51.png 300w\" sizes=\"(max-width: 521px) 100vw, 521px\" \/><br \/>\n531 &#8211; 396 = ______<br \/>\nAnswer:<\/p>\n<p>&nbsp;<\/p>\n<p>Question 5.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou earn 631 points in a video game. You trade in 475 points for a special power. How many points do you have left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20240\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-15.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 15\" width=\"94\" height=\"119\" \/><br \/>\n____ points<br \/>\nAnswer:<br \/>\n156 points.<\/p>\n<p>Explanation:<br \/>\nThe number of points earned in a video game is 631 points and in that, we trade in 475 points for a special power, and the remaining points left are 631 &#8211; 475 = 156 points.<\/p>\n<p>Question 6.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYou have 137 books. You put your books on two bookshelves. Each shelf can hold up to 72 books. How many books can you put on each shelf? Explain.<br \/>\n_______ books on Shelf 1 _____ books on Shelf 2<br \/>\n____________________<br \/>\n____________________<br \/>\nAnswer:<br \/>\n72 books on shelf 1 and 65 books on shelf 2.<\/p>\n<p>Explanation:<br \/>\nThe number of books we have is 137 books and we need to put those books in two bookshelves and each shelf can hold up to 72 books. So for two shelves, the number of books can hold is 72+72= 144 books. So 72 books can be put in one bookshelf and in the other bookshelf we can keep remaining books which is 137 &#8211; 72= 65 books in another bookshelf.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20241\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-16.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.3 16\" width=\"558\" height=\"126\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-16.png 558w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-16-300x68.png 300w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/><br \/>\n_____ hundreds, ______ tens, and _____ ones is _______.<br \/>\nAnswer:<br \/>\n7 hundreds, 6 tens and 3 ones which is 763.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29161\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-16-1.png\" alt=\"Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.3-16\" width=\"292\" height=\"113\" \/><br \/>\nIn the above image, we can see seven hundred and six tens and three ones which is<br \/>\n7\u00d7100 + 6\u00d710 + 3\u00d71<br \/>\n= 700+60+3<br \/>\n= 763.<\/p>\n<h3><a id=\"Lesson_10.4_Use_Compensation_to_Subtract_Three_Digit_Numbers\"><\/a>Lesson 10.4 Use Compensation to Subtract Three-Digit Numbers<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Find 315 \u2212 196.<br \/>\nAnswer:<br \/>\n315 &#8211; 196 = 119<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo here we will add 4 to 196, after adding we will get 196+4= 200. Now it is easy to subtract from 315,<br \/>\nso 315 &#8211; 200= 115 and we will add that 4 to the result 115. So 115+4= 119.<\/p>\n<p>Find 319 \u2212 200.<br \/>\nAnswer:<br \/>\n319 &#8211; 200= 119.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo here we will add 1 to 319, after adding we will get 319+1= 320. Now it is easy to subtract from 320,<br \/>\nso 320 &#8211; 200= 120 and we will subtract that 1 to the result 120. So 120 &#8211; 1= 119.<\/p>\n<p>How are the problems the same? How are they different? Which problem can you solve using mental math?<br \/>\n__________________________<br \/>\n___________________________<br \/>\nAnswer:<\/p>\n<p>Explanation:<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Use compensation to subtract.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20242\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-1.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 1\" width=\"269\" height=\"156\" \/><br \/>\nAnswer:<br \/>\n654 &#8211; 197= 457.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-24886\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-1-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-1\" width=\"269\" height=\"156\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above it shows that to add 3 to 197, so 197+3= 200,<br \/>\nnow 654 &#8211; 200= 454 and now we will add 3 to the result,<br \/>\nso 454+3= 457.<br \/>\n654 &#8211; 197= 457.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20243\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-2.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 2\" width=\"280\" height=\"157\" \/><br \/>\nAnswer:<br \/>\n835 &#8211; 309= 526.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-25213\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-2-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-2\" width=\"280\" height=\"157\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above, it shows that to subtract 9 in 309, so 309 &#8211; 9= 300,<br \/>\nnow 835 &#8211; 300= 535 and now we will subtract to the result,<br \/>\nso 835 &#8211; 309= 535 &#8211; 9<br \/>\n835 &#8211; 309= 526.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20244\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-3.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 3\" width=\"267\" height=\"155\" \/><br \/>\nAnswer:<br \/>\n571 &#8211; 212= 359.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-25214\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-3-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-3\" width=\"267\" height=\"155\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n571 &#8211; 212, so we will subtract 2 in 212, then the number will be 212 &#8211; 2= 210,<br \/>\nthen 571 &#8211; 210= 361,<br \/>\nAnd now we will subtract -2 to the result,<br \/>\nso 361 &#8211; 2= 359.<br \/>\n571 &#8211; 210= 359.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20245\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-4.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 4\" width=\"272\" height=\"163\" \/><br \/>\nAnswer:<br \/>\n611 &#8211; 392= 219.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-25215\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-4-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-4\" width=\"272\" height=\"163\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n611 &#8211; 392, so we will subtract 92 in 392, then the number will be 392 &#8211; 92= 300,<br \/>\nthen 611 &#8211; 300= 311,<br \/>\nAnd now we will subtract -92 to the result,<br \/>\nso 311 &#8211; 92= 219.<br \/>\n611 &#8211; 392= 219.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Use compensation to subtract.<\/strong><br \/>\nQuestion 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20246\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-5.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 5\" width=\"271\" height=\"160\" \/><br \/>\nAnswer:<br \/>\n428 &#8211; 212= 216.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-25217\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-5-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-5\" width=\"271\" height=\"160\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n428 &#8211; 212, so we will subtract 2 in 212, then the number will be 212 &#8211; 2= 210,<br \/>\nthen 428 &#8211; 210= 218,<br \/>\nAnd now we will subtract 2 to the result,<br \/>\nso 218 &#8211; 2= 216.<br \/>\n428 &#8211; 212= 216.<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20247\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-6.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 6\" width=\"272\" height=\"157\" \/><br \/>\nAnswer:<br \/>\n943 &#8211; 295= 648<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-27018\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-6-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-6\" width=\"272\" height=\"157\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n943 &#8211; 295 so we will subtract 52 in 295,<br \/>\nthen the number will be 295 &#8211; 52= 243,<br \/>\nthen 943 &#8211; 243= 700,<br \/>\nAnd now we will subtract 52 to the result,<br \/>\nso 700 &#8211; 52= 648.<br \/>\n943 &#8211; 295= 648.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20248\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-7.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 7\" width=\"271\" height=\"155\" \/><br \/>\nAnswer:<br \/>\n489 &#8211; 196= 293.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-27011\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-7-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-7\" width=\"271\" height=\"155\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n489 &#8211; 196, so we will subtract 7 in 196, then the number will be 196 &#8211; 7= 189,<br \/>\nthen 489 &#8211; 189= 300,<br \/>\nAnd now we will subtract 7 to the result,<br \/>\nso 300 &#8211; 7= 293.<br \/>\n489 &#8211; 196= 293.<\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20249\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-8.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 8\" width=\"271\" height=\"153\" \/><br \/>\nAnswer:<br \/>\n709 &#8211; 503= 206.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29168\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-8-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-8\" width=\"271\" height=\"153\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n709 &#8211; 503, so we will subtract 3 in 503, then the number will be 503 &#8211; 3= 500,<br \/>\nthen 709 &#8211; 500= 209,<br \/>\nAnd now we will subtract 3 to the result,<br \/>\nso 209 &#8211; 3= 206.<br \/>\n709 &#8211; 503= 206.<\/p>\n<p>Question 9.<br \/>\n613 \u2212 307 = _____<br \/>\nAnswer:<br \/>\n613 &#8211; 317= 306.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nThe given numbers are<br \/>\n613 &#8211; 307, so we will subtract 7 in 307, then the number will be 307 &#8211; 7= 300,<br \/>\nthen 613 &#8211; 307= 313,<br \/>\nAnd now we will subtract 7 to the result,<br \/>\nso 313 &#8211; 7= 306.<br \/>\n613 &#8211; 307= 306.<\/p>\n<p>Question 10.<br \/>\n861 &#8211; 499 = _____<br \/>\nAnswer:<br \/>\n861 &#8211; 499= 362.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nThe given numbers are<br \/>\n861 &#8211; 499, so we will subtract 99 in 499, then the number will be 499 &#8211; 99= 400,<br \/>\nthen 861 &#8211; 400= 461,<br \/>\nAnd now we will subtract 99 to the result,<br \/>\nso 461 &#8211; 99= 362.<br \/>\n861 &#8211; 499= 362.<\/p>\n<p>Question 11.<br \/>\n<strong>Writing<\/strong><br \/>\nShould you add to or subtract from 194 to find the difference? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20250\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-9.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 9\" width=\"497\" height=\"163\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-9.png 497w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-9-300x98.png 300w\" sizes=\"(max-width: 497px) 100vw, 497px\" \/><br \/>\nAnswer:<br \/>\n387 &#8211; 194= 193.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29178\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-9-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-9\" width=\"270\" height=\"160\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n387 &#8211; 194, so we will subtract 7 in 194, then the number will be 194 &#8211; 7= 187,<br \/>\nthen 387 &#8211; 187= 200,<br \/>\nAnd now we will subtract 3 to the result,<br \/>\nso 200 &#8211; 7= 193.<br \/>\n387 &#8211; 194= 193.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>A fish lays 861 eggs. A turtle lays 198 eggs. How many fewer eggs does the turtle lay than the fish?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20251\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-10.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 10\" width=\"139\" height=\"85\" \/><br \/>\nSubtraction equation:<br \/>\n______ fewer eggs<br \/>\nAnswer:<br \/>\n663 fewer eggs.<\/p>\n<p>Explanation:<br \/>\nAs fish lays 861 eggs and a turtle lays 198 eggs, so the number of fewer eggs does the turtle lay than the fish is<br \/>\n861 &#8211; 198= 663 fewer eggs.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 12.<br \/>\nA print shop has 650 sheets of white paper and 295 sheets of colored paper. How many fewer sheets of colored paper are there than white paper?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20252\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-11.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 11\" width=\"102\" height=\"98\" \/><br \/>\n_____ fewer sheets of colored paper<br \/>\nAnswer:<br \/>\n355 fewer sheets of colored paper.<\/p>\n<p>Explanation:<br \/>\nAs a printer shop has 650 sheets of white paper and 295 sheets of colored paper. So the fewer sheets of colored paper are there than white paper is 650 &#8211; 295= 355 fewer sheets of colored paper.<\/p>\n<p>Question 13.<br \/>\nA party store has 725 different cards and 506 different balloons. How many more cards are there than balloons?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20253\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-12.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 12\" width=\"80\" height=\"172\" \/><br \/>\n____ more cards<br \/>\nAnswer:<br \/>\n219 more cards.<\/p>\n<p>Explanation:<br \/>\nAs a party store has 725 different cards and 506 different balloons, so the will be 725 &#8211; 506= 219 more cards are there than balloons.<\/p>\n<p>Question 14.<br \/>\nHow are Exercises 12 and 13 similar? How are they different?<br \/>\n____________________<br \/>\n_____________________<br \/>\nAnswer:<\/p>\n<h3><a id=\"Use_Compensation_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.4\"><\/a>Use Compensation to Subtract Three-Digit Numbers Homework &amp; Practice 10.4<\/h3>\n<p><strong>Use compensation to subtract.<\/strong><br \/>\nQuestion 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20254\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-13.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 13\" width=\"285\" height=\"159\" \/><br \/>\nAnswer:<br \/>\n972 &#8211; 415= 557<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29180\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-13-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-13\" width=\"285\" height=\"159\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n972 &#8211; 415, we will subtract 15 in 415, then the number will be 415 &#8211; 15= 400,<br \/>\nthen 972 &#8211; 400= 572,<br \/>\nAnd now we will subtract 3 to the result,<br \/>\nso 572 &#8211; 15= 557.<br \/>\n972 &#8211; 415= 557.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20255\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-14.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 14\" width=\"282\" height=\"151\" \/><br \/>\nAnswer:<br \/>\n328 &#8211; 186= 142.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29187\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-14-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-14\" width=\"282\" height=\"151\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n328 &#8211; 186, we will add 14 to 186, then the number will be 186 + 14= 200,<br \/>\nthen 328 &#8211; 200= 128,<br \/>\nAnd now we will add 14 to the result,<br \/>\nso 128 + 14= 142.<br \/>\n328 &#8211; 186= 142.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20256\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-15.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 15\" width=\"271\" height=\"153\" \/><br \/>\nAnswer:<br \/>\n703 &#8211; 598= 105<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29197\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-15-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-15\" width=\"271\" height=\"153\" \/><br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n703 &#8211; 598, we will add 2 to 598, then the number will be 598 + 2= 600,<br \/>\nthen 703 &#8211; 600= 103,<br \/>\nAnd now we will add 14 to the result,<br \/>\nso 103 + 2= 105.<br \/>\n703 &#8211; 598= 105.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20257\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-16.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 16\" width=\"275\" height=\"153\" \/><br \/>\nAnswer:<br \/>\nOn compensation subtraction 841 &#8211; 603, we will get the result as 105.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n841 &#8211; 603, we will subtract 3 in 603, then the number will be 603 &#8211; 3= 600,<br \/>\nthen 841 &#8211; 600= 541,<br \/>\nAnd now we will subtract -3 to the result,<br \/>\nso 541 &#8211; 3= 105 and on subtracting 841 &#8211; 603 we will get the result as 105.<\/p>\n<p>Question 5.<br \/>\n439 &#8211; 210 = ______<br \/>\nAnswer:<br \/>\nOn compensation subtraction 439 -210 we will get the result as 229.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n439 &#8211; 210, we will subtract 1 in 210, then the number will be 210 &#8211; 1= 209,<br \/>\nthen 439 &#8211; 209= 230,<br \/>\nAnd now we will subtract -1 to the result,<br \/>\nso 230 &#8211; 1= 229. On compensation subtraction 439 -210 we will get the result as 229.<\/p>\n<p>Question 6.<br \/>\n719 &#8211; 302 = ______<br \/>\nAnswer:<br \/>\nOn compensation subtraction 719 -302 we will get the result as 417.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nIn the above figure, the given numbers are<br \/>\n719 &#8211; 302, we will subtract 2 in 302, then the number will be 302 &#8211; 2= 300,<br \/>\nthen 719 &#8211; 300= 419,<br \/>\nAnd now we will subtract -2 to the result,<br \/>\nso 419 &#8211; 2= 417. On compensation subtraction 719 -302 we will get the result as 417.<\/p>\n<p>Question 7.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nYour friend uses compensation to find 796 \u2212 304. Is your friend correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20258\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-17.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 17\" width=\"448\" height=\"135\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-17.png 448w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-17-300x90.png 300w\" sizes=\"(max-width: 448px) 100vw, 448px\" \/><br \/>\nAnswer:<br \/>\nOn compensation subtraction 796 -304 we will get the result as 492.<\/p>\n<p>Explanation:<br \/>\nYes, my friend is correct. As compensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction. So in the above figure, the given numbers are<br \/>\n796 &#8211; 304, we will subtract 4 in 304, then the number will be 304 &#8211; 4= 300,<br \/>\nthen 796 &#8211; 300= 496,<br \/>\nAnd now we will subtract 4 to the result,<br \/>\nso 496 &#8211; 4= 492. On compensation subtraction 796 -304 we will get the result as 492.<\/p>\n<p>Question 8.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou write a 225-word essay. Your friend writes a 598-word essay. How many fewer words do you write?<br \/>\n_______ fewer words<br \/>\nAnswer:<br \/>\nThe number of fewer words written by me is 373 words.<\/p>\n<p>Explanation:<br \/>\nThe number of words written by me is 225 easy words and my friend writes 598 essay words. So the fewer words were written by me than my friend is 598 &#8211; 225= 373 words.<\/p>\n<p>Question 9.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nHow many more students like math than science?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20259\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-18.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 18\" width=\"232\" height=\"142\" \/><br \/>\n_____ more students<br \/>\nAnswer:<br \/>\n151 more students like math than science.<\/p>\n<p>Explanation:<br \/>\nGiven the number of students like math is 348 and the number of students like science is 197. So the number of students who like math more than science is 348 &#8211; 197= 151 students.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p><strong>Find the missing digits.<\/strong><br \/>\nQuestion 10.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20260\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-19.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 19\" width=\"130\" height=\"142\" \/><br \/>\nAnswer:<br \/>\nBy adding 35 + 46 we will get the result as 81.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29928\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-19-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-19\" width=\"130\" height=\"142\" \/><br \/>\nIn the above image, we can see the result as 81. So to get 1 in one&#8217;s place we will take 6 in the empty box, so by adding 5 and 6 we will get 11. So we got 1 in one&#8217;s place. Now we know the one value, so to get the other value we will subtract the value which we got in the result. So 81 &#8211; 46= 35, and the other number 35. So 35 + 46= 81.<\/p>\n<p>Question 11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20261\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-20.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 20\" width=\"128\" height=\"144\" \/><br \/>\nAnswer:<br \/>\nBy adding 61 + 37 we will get the result of 81.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29933\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-20-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-20\" width=\"128\" height=\"144\" \/><br \/>\nIn the above image, we can see the result as 98. So to get 8 in one&#8217;s place we will take 7 in the empty box, so by adding 1 and 7 which is 7 + 1= 8, we will get 8. So we got 8 in one&#8217;s place. Now we know the one value which is 37, so to get the other value we will subtract the value which we got in the result. So 98 &#8211; 37= 61, and the other number 37. So 61 + 37= 98.<\/p>\n<p>Question 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20262\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-21.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.4 21\" width=\"129\" height=\"134\" \/><br \/>\nAnswer:<br \/>\nBy adding 27 + 17 we will get the result of 81.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-29934\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-21-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.4-21\" width=\"129\" height=\"134\" \/><br \/>\nIn the above image, we can see the result as 44. So to get 4 in one&#8217;s place we will take 7 in the empty box, so by adding 7 and 7 which is 7 + 7= 14, we will get 14. So we got 4 in one&#8217;s place. Now we know the one value which is 17, so to get the other value we will subtract the value which we got in the result. So 44 &#8211; 17= 27, and the other number 27. So 27 + 17= 44.<\/p>\n<h3><a id=\"Lesson_10.5_Use_Models_to_Subtract_Three_Digit_Numbers\"><\/a>Lesson 10.5 Use Models to Subtract Three-Digit Numbers<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Model to solve. Make a quick sketch of your model.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20263\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 1\" width=\"502\" height=\"612\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1.png 502w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1-246x300.png 246w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/><\/p>\n<p>323 &#8211; 219 = _____<br \/>\nAnswer:<br \/>\nOn subtracting 323 &#8211; 219 we will get the result as 104.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-30574\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1\" width=\"514\" height=\"421\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1-1.png 514w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-1-1-300x246.png 300w\" sizes=\"(max-width: 514px) 100vw, 514px\" \/><br \/>\nTo model 323 &#8211; 219 which is 104, we will take square for hundred, the line for ten, and dot for ones. To subtract 323 &#8211; 219, we can see that 9 is greater than 1. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, we can see the model for 104.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\n429 &#8211; 165 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20264\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 2\" width=\"458\" height=\"192\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2.png 458w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2-300x126.png 300w\" sizes=\"(max-width: 458px) 100vw, 458px\" \/><br \/>\nAnswer:<br \/>\nOn subtracting 429 &#8211; 165 we will get the result as 264.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-30607\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2\" width=\"458\" height=\"192\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2-1.png 458w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-2-1-300x126.png 300w\" sizes=\"(max-width: 458px) 100vw, 458px\" \/><br \/>\nTo model 429 &#8211; 165 which is 264, we will take square for hundred, the line for ten, and dot for ones. To subtract 429 &#8211; 165, we can see that 6 is greater than 2. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, we can see the model for 264.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p>Question 2.<br \/>\n359 &#8211; 167 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20265\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-3.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 3\" width=\"459\" height=\"188\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-3.png 459w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-3-300x123.png 300w\" sizes=\"(max-width: 459px) 100vw, 459px\" \/><br \/>\nAnswer:<br \/>\nOn subtracting 359 &#8211; 167 we will get the result as 192.<\/p>\n<p>Explanation:<br \/>\nTo model 359 &#8211; 167 which is 192, we will take square for hundred, the line for ten, and dot for ones. To subtract 359 &#8211; 167, we can see that 6 is greater than 5. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, we can see the model for 192.<\/p>\n<p>Question 3.<br \/>\n527 &#8211; 384 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20266\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-4.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 4\" width=\"457\" height=\"186\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-4.png 457w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-4-300x122.png 300w\" sizes=\"(max-width: 457px) 100vw, 457px\" \/><br \/>\nAnswer:<br \/>\nOn subtracting 527 &#8211; 384 we will get the result as 143.<\/p>\n<p>Explanation:<br \/>\nTo model 527 &#8211; 384 which is 143, we will take square for hundred, the line for ten, and dot for ones. To subtract 527 &#8211; 143, we can see that 4 is greater than 2. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, we can see the model for 143.<\/p>\n<p>Question 4.<br \/>\n673 &#8211; 245 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20267\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-5.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 5\" width=\"391\" height=\"182\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-5.png 391w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-5-300x140.png 300w\" sizes=\"(max-width: 391px) 100vw, 391px\" \/><br \/>\nAnswer:<br \/>\nOn subtracting 673 &#8211; 245 we will get the result as 428.<\/p>\n<p>Explanation:<br \/>\nTo model 673 &#8211; 245 which is 428, we will take square for hundred, the line for ten, and dot for ones. To subtract 673 &#8211; 245, we can see that 5 is greater than 3. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, we can see the model for 428.<\/p>\n<p>Question 5.<br \/>\n<strong>Patterns<\/strong><br \/>\nWrite and solve the next problem in the pattern.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20268\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 6\" width=\"578\" height=\"117\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6.png 578w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6-300x61.png 300w\" sizes=\"(max-width: 578px) 100vw, 578px\" \/><br \/>\nAnswer:<br \/>\nSo on subtracting 629 &#8211; 141 we will get the result as 488.<br \/>\nSo on subtracting 529 &#8211; 241 we will get the result as 288.<br \/>\nSo on subtracting 429 &#8211; 341 we will get the result as 088.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-30843\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6\" width=\"578\" height=\"117\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6-1.png 578w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-6-1-300x61.png 300w\" sizes=\"(max-width: 578px) 100vw, 578px\" \/><br \/>\nAs we can see in the above image that hundreds place was increasing by a hundred times in minuend and in hundreds place hundred was decreasing in subtrahend, so that the next problem will be 629 &#8211; 141. To subtract 629 &#8211; 141, we can see that 4 is greater than 2. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. So on subtracting 629 &#8211; 141 we will get the result as 488. To subtract 529 &#8211; 241, we can see that 4 is greater than 2. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. So on subtracting 529 &#8211; 241 we will get the result as 288. To subtract 429 &#8211; 341, we can see that 4 is greater than 2. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. So on subtracting 429 &#8211; 341 we will get the result as 088.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>There are 549 people in a parade. 158 of them are in the marching band. How many people are not in the marching band?<br \/>\nModels:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20269\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-7.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 7\" width=\"547\" height=\"286\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-7.png 547w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-7-300x157.png 300w\" sizes=\"(max-width: 547px) 100vw, 547px\" \/><br \/>\n_____ people<br \/>\nAnswer:<br \/>\nThe number of people who are not in the marching band is 549 &#8211; 158= 391.<\/p>\n<p>Explanation:<br \/>\nThe number of people in a parade is 549 and in that 158 people are in the marching band. So the number of people who are not in the marching band is 549 &#8211; 158= 391.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 6.<br \/>\nA school library has 784 books. 256 of them are checked out. How many books are not checked out?<br \/>\n_____ books<br \/>\nAnswer:<br \/>\n586 books are not checked.<\/p>\n<p>Explanation:<br \/>\nThe number of books in a school library is 784 books and in that 256 are checked out. So the number of books not checked out is 784 &#8211; 256= 586.<\/p>\n<p>Question 7.<br \/>\nA horse weighs 371 pounds more than a pig. The horse weighs 914 pounds. How much does the pig weigh?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20270\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-8.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 8\" width=\"152\" height=\"101\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-8.png 152w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-8-150x101.png 150w\" sizes=\"(max-width: 152px) 100vw, 152px\" \/><br \/>\n_____ pounds<br \/>\nAnswer:<br \/>\nThe weight of the pig is 543 pounds.<\/p>\n<p>Explanation:<br \/>\nGiven the weight of the horse is 371 pounds more than the pig and the weight of the horse is 914 pounds. So to find the weight of the pig we will subtract 914 &#8211; 371= 543. So the weight of the pig is 543 pounds.<\/p>\n<h3><a id=\"Use_Models_to_Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.5\"><\/a>Use Models to Subtract Three-Digit Numbers Homework &amp; Practice 10.5<\/h3>\n<p>Question 1.<br \/>\n738 &#8211; 544 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20271\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-9.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 9\" width=\"456\" height=\"191\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-9.png 456w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-9-300x126.png 300w\" sizes=\"(max-width: 456px) 100vw, 456px\" \/><\/p>\n<p>Answer:<br \/>\nOn subtracting 738 &#8211; 544 we will get the result as 194.<\/p>\n<p>Explanation:<br \/>\nTo model 738 &#8211; 544 which is 194, we will take square for hundred, the line for ten, and dot for ones. To subtract 738 &#8211; 544, we can see that 4 is greater than 3. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, on subtracting 738 &#8211; 544 we will get the result as 194.<\/p>\n<p>Question 2.<br \/>\n519 &#8211; 248 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20272\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-10.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 10\" width=\"408\" height=\"193\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-10.png 408w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-10-300x142.png 300w\" sizes=\"(max-width: 408px) 100vw, 408px\" \/><\/p>\n<p>Answer:<br \/>\nOn subtracting 519 &#8211; 248 we will get the result as 271.<\/p>\n<p>Explanation:<br \/>\nTo model 519 &#8211; 248 which is 194, we will take square for hundred, the line for ten, and dot for ones. To subtract 519 &#8211; 248, we can see that 4 is greater than 1. So we will need a little bit extra in order to subtract, and then we will use an amount from the column to the left. So in this subtraction, we will borrow when we are subtracting one number that is greater than another. And in the above image, on subtracting 519 &#8211; 248 we will get the result as 271.<\/p>\n<p>Question 3.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nComplete the subtraction problem so that you need to regroup to subtract.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20273\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-11.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 11\" width=\"262\" height=\"123\" \/><br \/>\nAnswer:<br \/>\nOn subtracting 749 &#8211; 345 the result will be 404.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nLet the blank be 5 and 749 &#8211; 345 will be 404.<\/p>\n<p>Question 4.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nA clown makes 315 balloon animals. 156 are giraffes. How many balloon animals are not giraffes?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20274\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-12.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 12\" width=\"75\" height=\"92\" \/><br \/>\n_____ balloon animals<br \/>\nAnswer:<br \/>\n159 balloon animals are not giraffes.<\/p>\n<p>Explanation:<br \/>\nAs a clown makes 315 balloon animals and of that 156 are giraffes, so the number of balloons that are not giraffes is 315 &#8211; 156= 159 balloon animals.<\/p>\n<p>Question 5.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYour friend has 102 more downloaded songs than you. Your friend has 213 downloaded songs. How many downloaded songs do you have?<br \/>\n_____ downloaded songs&#8217;<br \/>\nAnswer:<br \/>\n111 downloaded songs I have.<\/p>\n<p>Explanation:<br \/>\nAs my friend has 213 downloaded songs and 102 more downloaded songs than I. So the total number of downloaded songs I have is 213 &#8211; 102= 111 songs.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20275\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-13.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 13\" width=\"127\" height=\"88\" \/><br \/>\nAnswer:<br \/>\n463 + 194= 657.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31564\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-13-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-13\" width=\"127\" height=\"88\" \/><br \/>\nBy subtracting 463 + 194 we will get the result of 657.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20276\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-14.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 14\" width=\"134\" height=\"92\" \/><br \/>\nAnswer:<br \/>\n186 + 567= 753.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31563\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-14-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-14\" width=\"134\" height=\"92\" \/><br \/>\nBy adding 186 + 567 we will get the result of 753.<\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20277\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-15.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.5 15\" width=\"138\" height=\"92\" \/><br \/>\nAnswer:<br \/>\n623 + 298= 921.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31566\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-15-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.5-15\" width=\"138\" height=\"92\" \/><br \/>\nBy adding 623 + 298 we will get the result of 921.<\/p>\n<h3><a id=\"Lesson_10.6_Subtract_Three_Digit_Numbers\"><\/a>Lesson 10.6 Subtract Three-Digit Numbers<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Find each difference.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20278\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 1\" width=\"515\" height=\"208\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1.png 515w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1-300x121.png 300w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 529 &#8211; 218 is 311.<br \/>\nThe difference between 553 &#8211; 316 is 237.<br \/>\nThe difference between 323 &#8211; 194 is 129.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31263\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1\" width=\"515\" height=\"208\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1-1.png 515w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-1-1-300x121.png 300w\" sizes=\"(max-width: 515px) 100vw, 515px\" \/><\/p>\n<p>Compare the problems. How are they the same? How are they different?<br \/>\n_________________________<br \/>\n_________________________<br \/>\nAnswer:<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20279\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-2.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 2\" width=\"149\" height=\"138\" \/><br \/>\nAnswer:<br \/>\nBy regrouping in the subtraction of 423 &#8211; 174 we will get the result as 249.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31562\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-2-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-2\" width=\"149\" height=\"138\" \/><br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 423- 174 we get 249.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20280\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-3.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 3\" width=\"149\" height=\"139\" \/><br \/>\nAnswer:<br \/>\nBy regrouping in the subtraction of 542 &#8211; 367 we will get the result of 175.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-31569\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-3-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-3\" width=\"149\" height=\"139\" \/><br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 542- 367 we get 175<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20281\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-4.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 4\" width=\"152\" height=\"138\" \/><br \/>\nAnswer:<br \/>\nBy regrouping in the subtraction of 315 &#8211; 151 we will get the result of 164.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 315- 151 we get 164<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20282\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-5.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 5\" width=\"148\" height=\"136\" \/><br \/>\nAnswer: 292<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 568 &#8211; 276 we get 292<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20283\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-6.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 6\" width=\"144\" height=\"130\" \/><br \/>\nAnswer: 475<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 821- 346 we get 475<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20284\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-7.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 7\" width=\"151\" height=\"137\" \/><br \/>\nAnswer: 438<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 727- 289 we get 438<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20285\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-8.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 8\" width=\"136\" height=\"119\" \/><br \/>\nAnswer: 246<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 434 &#8211; 188 we get 246<\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20286\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-9.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 9\" width=\"143\" height=\"89\" \/><br \/>\nAnswer: 628<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 963- 335 we get 628<\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20287\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-10.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 10\" width=\"162\" height=\"81\" \/><br \/>\nAnswer: 487<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 741- 254 we get 487<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p>Question 10.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20288\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-11.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 11\" width=\"156\" height=\"81\" \/><br \/>\nAnswer: 160<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 345- 185 we get 160<\/p>\n<p>Question 11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20289\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-12.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 12\" width=\"151\" height=\"98\" \/><br \/>\nAnswer: 209<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 627 &#8211; 418 we get 209<\/p>\n<p>Question 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20290\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-13.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 13\" width=\"146\" height=\"97\" \/><br \/>\nAnswer: 193<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 916- 723 we get 193<\/p>\n<p>Question 13.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20291\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-14.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 14\" width=\"153\" height=\"104\" \/><br \/>\nAnswer: 462<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 829- 367 we get 462<\/p>\n<p>Question 14.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20292\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-15.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 15\" width=\"147\" height=\"98\" \/><br \/>\nAnswer: 250<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 541- 291 we get 250<\/p>\n<p>Question 15.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20293\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-16.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 16\" width=\"149\" height=\"93\" \/><br \/>\nAnswer: 169<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 351- 182\u00a0 we get 169<\/p>\n<p>Question 16.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20294\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-17.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 17\" width=\"153\" height=\"100\" \/><br \/>\nAnswer: 268<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 465- 197 we get 268<\/p>\n<p>Question 17.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20295\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-18.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 18\" width=\"144\" height=\"93\" \/><br \/>\nAnswer: 354<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 643 &#8211; 289\u00a0 we get 354<\/p>\n<p>Question 18.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20296\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-19.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 19\" width=\"152\" height=\"100\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-19.png 152w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-19-150x100.png 150w\" sizes=\"(max-width: 152px) 100vw, 152px\" \/><br \/>\nAnswer: 175<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 673- 498 we get 175<\/p>\n<p>Question 19.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nFind the missing digits<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20297\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 20\" width=\"597\" height=\"126\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20.png 597w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20-300x63.png 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><br \/>\nAnswer:<br \/>\nThe missing digit in the first image is 3.<br \/>\nThe missing digit in the first image is 8.<br \/>\nThe missing digit in the first image is 4.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-32898\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20\" width=\"597\" height=\"126\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20-1.png 597w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-20-1-300x63.png 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><br \/>\nTo find the missing digits in the above figure, we will subtract the difference and minuend. So for the first image we can see that minuend is greater than subtrahend that i 5\u00a0 is greater than 0, so there is no carry forward. And we can subtract the minuend and difference which is 4 &#8211; 1=3. So the missing digit is 3. We can find in another way also by subtracting minuend and the difference which is in the second image we will subtract 957 &#8211; 279 which is 678 and the missing digit is 8. For the third image we will add subtrahend and the difference which is<br \/>\n484 + 158 which is 642 and the missing digit is 4.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>A jeweler has 616 bracelets and 668 necklaces. He sells 269 bracelets. How many bracelets are left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20298\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-21.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 21\" width=\"102\" height=\"120\" \/><br \/>\nSubtraction equation:<br \/>\n______ bracelets<br \/>\nAnswer:<br \/>\nSubtraction equation: 616 &#8211; 269= 347<br \/>\n347 bracelets left.<\/p>\n<p>Explanation:<br \/>\nAa a jeweler has 616 bracelets and 668 necklaces and he sells 269 bracelets. So the number of bracelets left is<br \/>\n616 &#8211; 269= 347 bracelets left.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 20.<br \/>\nA vendor has 354 hats and 294 pairs of sunglasses. She sells 186 hats. How many hats are left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20300\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-22.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 22\" width=\"105\" height=\"92\" \/><br \/>\n_____ hats<br \/>\nAnswer:<br \/>\n168 hats left.<\/p>\n<p>Explanation:<br \/>\nAs the vendor has 354 hats and 294 pairs of sunglasses and she sold 186 hats, the number of hats lefts are<br \/>\n354 &#8211; 186= 168 hats left.<\/p>\n<p>Question 21.<br \/>\nThere are 449 watercolor paintings and 373 oil paintings in a school art show. 238 paintings win a ribbon. How many do not win a ribbon?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20301\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-23.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 23\" width=\"162\" height=\"130\" \/><br \/>\n_____ paintings<br \/>\nAnswer:<br \/>\n584 paintings didn&#8217;t win the ribbon.<\/p>\n<p>Explanation:<br \/>\nThe total number of watercolor paintings are 449 and the number of oil paintings is 373 and of that 238 won a ribbon, so the number of paintings that didn&#8217;t win the ribbon is, first we will add watercolor paintings and oil painting and then we will subtract 238 from the result. So 449 +373= 822 paintings and in that 238 paintings win a ribbon. So the number of paintings that didn&#8217;t win the ribbon is 822 &#8211; 238= 584 paintings didn&#8217;t win the ribbon.<\/p>\n<p>Question 22.<br \/>\nExplain how Exercises 20 and 21 are different.<br \/>\n_________________________<br \/>\n_________________________<br \/>\nAnswer:<br \/>\nIn exercise 20 the given objects are hats and sunglasses and asked to find about hats only. But in exercise 21 asked about both water color paintings and oil paintings which didn&#8217;t win the ribbon.<\/p>\n<h3><a id=\"Subtract_Three_Digit_Numbers_Homework_&amp;_Practice_10.6\"><\/a>Subtract Three-Digit Numbers Homework &amp; Practice 10.6<\/h3>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20302\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 24\" width=\"152\" height=\"114\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24.png 152w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24-150x114.png 150w\" sizes=\"(max-width: 152px) 100vw, 152px\" \/><br \/>\nAnswer: 435<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-30026\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24-2.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24\" width=\"152\" height=\"114\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24-2.png 152w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-24-2-150x114.png 150w\" sizes=\"(max-width: 152px) 100vw, 152px\" \/><br \/>\nExplanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 873 &#8211; 438 we get 435<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20303\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-25.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 25\" width=\"152\" height=\"124\" \/><br \/>\nAnswer: 63<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-30025\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-25-1.png\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-25\" width=\"152\" height=\"124\" \/><\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 341 &#8211; 278 we get 063<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20304\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-26.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 26\" width=\"150\" height=\"127\" \/><br \/>\nAnswer:\u00a0 757<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 913 &#8211; 156 we get 757<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20305\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-27.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 27\" width=\"146\" height=\"83\" \/><br \/>\nAnswer: 269<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 456- 187 we get 269<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20306\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-28.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 28\" width=\"144\" height=\"87\" \/><br \/>\nAnswer: 328<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 625 &#8211; 297 we get 328<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20307\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-29.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 29\" width=\"139\" height=\"85\" \/><br \/>\nAnswer: 269<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 951 &#8211; 682 we get 269<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20308\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-30.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 30\" width=\"139\" height=\"92\" \/><br \/>\nAnswer: 78<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 452 &#8211; 374 we get 078<\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20309\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-31.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 31\" width=\"142\" height=\"90\" \/><br \/>\nAnswer: 368<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 961 &#8211; 593\u00a0 we get 368<\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20310\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-32.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 32\" width=\"152\" height=\"96\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-32.png 152w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-32-150x96.png 150w\" sizes=\"(max-width: 152px) 100vw, 152px\" \/><br \/>\nAnswer: 457<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. as shown in the above image<br \/>\nHence 746 &#8211; 289 we get 457<\/p>\n<p>Question 10.<br \/>\n<strong>Number Sense<\/strong><br \/>\nComplete the subtraction problem so that you do not need to regroup to subtract.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20311\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-33.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 33\" width=\"250\" height=\"133\" \/><br \/>\nAnswer:<br \/>\nThe difference without regrouping is 453 &#8211; 241 which is 212.<\/p>\n<p>Explanation:<br \/>\nLet the blank be the any number which is less than 5. As given that we do not need to regroup to subtract, so we will pick any number from 0 to 5. So let the number be 4, then 453 &#8211; 241= 212.<\/p>\n<p>Question 11.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nDescartes finds 731 \u2212 246. Is he correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20312\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-34.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 34\" width=\"351\" height=\"144\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-34.png 351w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-34-300x123.png 300w\" sizes=\"(max-width: 351px) 100vw, 351px\" \/><br \/>\nAnswer:<br \/>\nNo, Descartes is not correct.<\/p>\n<p>Explanation:<br \/>\nNo, Descartes is not correct. In the above image we can see that 1 is less than 6. So we need to borrow from 3 to subtract the digit 6 from 1. Then 731 &#8211; 246 will be 485.<\/p>\n<p>Question 12.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\n453 bananas and 456 apples are shipped to a store. When they arrive, 268 of the bananas are rotten. How many bananas are not rotten?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20313\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-10.6-35.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 10.6 35\" width=\"87\" height=\"96\" \/><br \/>\n____ bananas<br \/>\nAnswer:<br \/>\n185 bananas are not rotten.<\/p>\n<p>Explanation:<br \/>\nThe total number of bananas is 453 and the number of apples in the store is 456. And in that 268 bananas are rotten, so the number of bananas not rotten is 453 &#8211; 268= 185 bananas are not rotten.<\/p>\n<p>Question 13.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThere are 432 red shirts and 293 blue shirts in stock. 516 shirts are sold. How many shirts are left?<br \/>\n_____ shirts<br \/>\nAnswer:<br \/>\n209 shirts left.<\/p>\n<p>Explanation:<br \/>\nThe total number of red shirts is 432 and the number of blue shirts in stock is 293. So the total number of shirts is<br \/>\n432 + 293= 725 shirts. And in that 516 shirts are sold out, so the number of shirts left is 725 &#8211; 516= 209 shirts left.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 14.<br \/>\nCount by fives.<br \/>\n680, 685, ____, _____, _____, _____, ______<br \/>\nAnswer:<br \/>\n680, 685, 690, 695, 700, 705, 710, 715.<\/p>\n<p>Explanation:<br \/>\nBy adding five to the given numbers we will get the result as<br \/>\n680 + 5= 685,<br \/>\n685 + 5= 690,<br \/>\n690 + 5= 695,<br \/>\n695 + 5= 700,<br \/>\n700 + 5= 705,<br \/>\n705 + 5= 710,<br \/>\n710 + 5= 715.<\/p>\n<h3><a id=\"Lesson_10.7_Subtract_from_Numbers_That_Contain_Zeros\"><\/a>Lesson 10.7 Subtract from Numbers That Contain Zeros<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Find each difference.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20314\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-1.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 1\" width=\"361\" height=\"96\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-1.png 361w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-1-300x80.png 300w\" sizes=\"(max-width: 361px) 100vw, 361px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 400 &#8211; 178 is 222.<br \/>\nThe difference between 399 &#8211; 177 is 222.<\/p>\n<p>Explanation:<br \/>\nFor the image 1 we should follow regrouping method, as the digits contains 0. So by regrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend. So to subtract 400 &#8211; 178 we will borrow from 4 as the 0 is less than 7 and 8. Then 400 &#8211; 178 will be 222. For the image 2 we don&#8217;t need any regrouping as minuend is greater than subtrahend. So<br \/>\n399 &#8211; 177= 222.<\/p>\n<p>How are the problems the same? How are they different? Which problem can you solve without regrouping?<br \/>\n______________________________<br \/>\n______________________________<br \/>\nAnswer:<br \/>\nThe problems are same by their result and the problem is different as their minuend and subtrahend are different. The second problem can solve without using regrouping. As minuend is greater than subtrahend, so we don&#8217;t need regrouping.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Use regrouping or compensation to subtract.<\/strong><br \/>\nQuestion 1.<br \/>\n300 \u2212 139 = _____<br \/>\nAnswer:<br \/>\n300 &#8211; 139= 161.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 1 for both the numbers. Then 300 &#8211; 1= 299 and 139 &#8211; 1= 138. Now we will subtract 299 &#8211; 138= 161.<\/p>\n<p>Question 2.<br \/>\n402 \u2212 265 = _____<br \/>\nAnswer:<br \/>\n402 &#8211; 265= 137.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 3 for both the numbers. Then 402 &#8211; 3= 399 and 265 &#8211; 3= 262. Now we will subtract 399 &#8211; 262= 137.<\/p>\n<p>Question 3.<br \/>\n800 \u2212 547 = _____<br \/>\nAnswer:<br \/>\n800 &#8211; 547= 253.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 1 for both the numbers. Then 800 &#8211; 1= 799 and 547 &#8211; 1= 546. Now we will subtract 799 &#8211; 546= 253.<\/p>\n<p>Question 4.<br \/>\n910 \u2212 252 = _____<br \/>\nAnswer:<br \/>\n910 &#8211; 252= 658.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 52 in 252 then 252 &#8211; 52= 200. Now we will subtract<br \/>\n910 &#8211; 200= 710. Now we will subtract 52 from the result 710, which is 710 &#8211; 52= 658. So 910 &#8211; 252= 658.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Use regrouping or compensation to subtract.<\/strong><br \/>\nQuestion 5.<br \/>\n310 &#8211; 186 = ____<br \/>\nAnswer:<br \/>\n310 &#8211; 186= 124.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 86 in 186 then 186 &#8211; 86= 100. Now we will subtract<br \/>\n310 &#8211; 100= 210. Now we will subtract 86 from the result 210, which is 210 &#8211; 86= 124. So 310 &#8211; 186= 124.<\/p>\n<p>Question 6.<br \/>\n620 &#8211; 458 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 620 &#8211; 458, the result will be 162.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 58 in 458 then 458 &#8211; 58= 400. Now we will subtract<br \/>\n620 &#8211; 400= 220. Now we will subtract 58 from the result 220, which is 220 &#8211; 58= 162. So 620 &#8211; 458= 162.<\/p>\n<p>Question 7.<br \/>\n906 &#8211; 729 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 906 &#8211; 729, the result will be 177.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 29 in 729 then 729 &#8211; 29= 700. Now we will subtract<br \/>\n906 &#8211; 700= 206. Now we will subtract 29 from the result 206, which is 206 &#8211; 29= 177. So 906- 729= 177.<\/p>\n<p>Question 8.<br \/>\n807 &#8211; 389 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 807 &#8211; 389, the result will be 418.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 89 in 389 then 389 &#8211; 89= 300. Now we will subtract<br \/>\n807 &#8211; 300= 507. Now we will subtract 89 from the result 507, which is 807 &#8211; 389= 418. So 807 &#8211; 389= 418.<\/p>\n<p>Question 9.<br \/>\n503 &#8211; 296 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 503 &#8211; 296, the result will be 207.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 96 in 296 then 296 &#8211; 96= 200. Now we will subtract<br \/>\n503 &#8211; 200= 303. Now we will subtract 96 from the result 303, which is 303 &#8211; 96= 207. So 503 &#8211; 296= 207.<\/p>\n<p>Question 10.<br \/>\n301 &#8211; 282 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 301 &#8211; 282, the result will be 19.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 82 in 282 then 282 &#8211; 82= 200. Now we will subtract<br \/>\n301 &#8211; 200= 101. Now we will subtract 82 from the result 101, which is 101 &#8211; 82= 19. So 301 &#8211; 282= 19.<\/p>\n<p>Question 11.<br \/>\n400 &#8211; 197 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 400 &#8211; 197, the result will be 203.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 97 in 197 then 197 &#8211; 97= 100. Now we will subtract<br \/>\n400 &#8211; 100= 300. Now we will subtract 97 from the result 300, which is 300 &#8211; 97= 203. So 400 &#8211; 197= 203.<\/p>\n<p>Question 12.<br \/>\n600 &#8211; 289 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 600 &#8211; 289, the result will be 311.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 89 in 289 then 289 &#8211; 89= 200. Now we will subtract<br \/>\n600 &#8211; 200= 400. Now we will subtract 89 from the result 400, which is 400 &#8211; 89= 311. So 600 &#8211; 289= 311.<\/p>\n<p>Question 13.<br \/>\n<strong>Structure<\/strong><br \/>\nShow two ways to find 500 \u2212314.<br \/>\nAnswer:<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>There are 400 paper lanterns. 279 of them are let go. How many paper lanterns are left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20315\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-2.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 2\" width=\"144\" height=\"107\" \/><br \/>\nSubtraction equation:<br \/>\n_____ paper lanterns<br \/>\nAnswer:<br \/>\nThe number of paper lanterns left is 121.<\/p>\n<p>Explanation:<br \/>\nThe number of paper lanterns is 400 and in that 279 of them are let go and the remaining left are<br \/>\n400 &#8211; 279= 121. So the number of paper lanterns left is 121.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p>Question 14.<br \/>\nThere are 803 fans at a stadium. 226 of them leave. How many fans are left?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20316\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-3.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 3\" width=\"157\" height=\"120\" \/><br \/>\n_____ fans<br \/>\nAnswer:<br \/>\nThe number of fans left is 577.<\/p>\n<p>Explanation:<br \/>\nThe total number of fans in the stadium is 803 and in that 226 of them are left. So the remaining number of fans left is 803 &#8211; 226= 577. So the number of fans left is 577.<\/p>\n<p>Question 15.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nA florist plants 600 flowers. The table shows how many have bloomed. How many flowers have not bloomed yet?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20317\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-4.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 4\" width=\"289\" height=\"112\" \/><br \/>\n_____ flowers<br \/>\nAnswer:<br \/>\nThe number of flowers not bloomed is 72.<\/p>\n<p>Explanation:<br \/>\nThe number of plants did the florist plant is 600 flowers. In the table given that the number of blooms in May is 296 and the number of blooms in June is 232. So the total number of blooms in the month of May and June is<br \/>\n296 + 232= 528. And the number of flowers not bloomed is 600 &#8211; 528= 72.<\/p>\n<h3><a id=\"Subtract_from_Numbers_That_Contain_Zeros_Homework_&amp;_Practice_10.7\"><\/a>Subtract from Numbers That Contain Zeros Homework &amp; Practice 10.7<\/h3>\n<p><strong>Use regrouping or compensation to subtract<\/strong><br \/>\nQuestion 1.<br \/>\n700 \u2212 465 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 700 &#8211; 465, the result will be 235.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 65 in 465 then 465 &#8211; 65= 400. Now we will subtract<br \/>\n700 &#8211; 400= 300. Now we will subtract 65 from the result 300, which is 300 &#8211; 82= 19. So 301 &#8211; 282= 19.<\/p>\n<p>Question 2.<br \/>\n302 \u2212 176 = _____<br \/>\nAnswer:<br \/>\nOn compensation subtraction of 302- 176, the result will be 126.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 76 in 176 then 176 &#8211; 76= 100. Now we will subtract<br \/>\n302 &#8211; 100= 202. Now we will subtract 76 from the result 202, which is 202 &#8211; 76= 126. So 302 &#8211; 176= 126.<\/p>\n<p>Question 3.<br \/>\n910 \u2212 186 = ______<br \/>\nAnswer:<br \/>\nBy compensation subtraction of 910- 186, the result will be 724.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 86 in 186 then 186 &#8211; 86= 100. Now we will subtract<br \/>\n910 &#8211; 100= 810. Now we will subtract 86 from the result 810, which is 810 &#8211; 86= 724. So 910 &#8211; 186= 724.<\/p>\n<p>Question 4.<br \/>\n800 \u2212 691 = _____<br \/>\nAnswer:<br \/>\nBy compensation subtraction of 800 &#8211; 691, the result will be 109.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will add 9 for 691 then 691 + 9= 700. Now we will subtract<br \/>\n800 &#8211; 700= 100. Now we will add 9 for the result 100, which is 100 + 9= 109. So 800 &#8211; 691= 109.<\/p>\n<p>Question 5.<br \/>\n<strong>Writing<\/strong><br \/>\nExplain why you might want to use compensation to subtract. Give an example.<br \/>\n_______________________________<br \/>\n_______________________________<br \/>\nAnswer:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction. So we will use compensation subtract. For example, if we take 420 &#8211; 326. So by the compensation method, we will subtract 26 in 326 then<br \/>\n326 &#8211; 26= 300. Now we will subtract 420 &#8211; 300= 120. Now we will subtract 26 for the result 120, which is<br \/>\n120 &#8211; 26= 109. So 420 &#8211; 326= 94.<\/p>\n<p>Question 6.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThere are 300 coins on a desk. 178 fall off. How many coins are left on the desk?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20318\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-5.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 5\" width=\"103\" height=\"53\" \/><br \/>\n_____ coins<br \/>\nAnswer:<br \/>\nThe number of coins left on the desk is 122.<\/p>\n<p>Explanation:<br \/>\nThe number of coins on a desk is 300 coins and in that 178 coins fall off. So the number of coins left on the desk is, here we will use compensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 78 for 178 then 178 &#8211; 78= 100. Now we will subtract<br \/>\n300 &#8211; 100= 200. Now we will subtract 78 for the result 200, which is 200 &#8211; 78= 122. So 300 &#8211; 178= 122.<\/p>\n<p>Question 7.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThere are 500 students in a school. How many students are absent?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20319\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.7-6.png\" alt=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000 10.7 6\" width=\"235\" height=\"110\" \/><br \/>\n______ students<br \/>\nAnswer:<br \/>\nThe number of students absent is 88 students.<\/p>\n<p>Explanation:<br \/>\nThe total number of students is 500 students and in that the attendance of boy students is 234 and the attendance of girl students is 178. So the total number of students who attended is 234 + 178= 412. And the number of students absent is 500 &#8211; 412= 88 students.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 8.<br \/>\n29 + 34 = _____<br \/>\nAnswer:<br \/>\n29 + 34= 63.<\/p>\n<p>Explanation:<br \/>\nOn adding 29 + 34, we will get the result as 63.<\/p>\n<p>Question 9.<br \/>\n46 + 13 = _____<br \/>\nAnswer:<br \/>\n46 + 13= 29.<\/p>\n<p>Explanation:<br \/>\nOn adding 46 + 13, we will get the result of 59.<\/p>\n<h3><a id=\"Lesson_10.8_Use_Addition_to Subtract\"><\/a>Lesson 10.8 Use Addition to Subtract<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use the number lines to solve.<br \/>\n445 &#8211; 220 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20320\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-1.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 1\" width=\"545\" height=\"250\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-1.png 545w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-1-300x138.png 300w\" sizes=\"(max-width: 545px) 100vw, 545px\" \/><br \/>\nAnswer:<\/p>\n<p>How are the equations the same? How are they different?<br \/>\n__________________________<br \/>\n__________________________<br \/>\nAnswer:<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Add to find the difference. Check your answer.<\/strong><br \/>\nQuestion 1.<br \/>\n488 \u2212 137 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20321\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-2.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 2\" width=\"585\" height=\"62\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-2.png 585w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-2-300x32.png 300w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 488 &#8211; 137 is 351.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 137 and add hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n137 + 300= 437 and then we will add fifty which is 437+50= 487 and then we will add one. The value will be<br \/>\n487 + 1=488. So the difference between 438 &#8211; 137 is 351.<\/p>\n<p>Question 2.<br \/>\n792 \u2212 446 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20322\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-3.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 3\" width=\"579\" height=\"48\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-3.png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-3-300x25.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 792 &#8211; 446 is 346.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 446 and add hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n446 + 300= 746 and then we will add four tens which is 746+40= 786 and then we will add six. The value will be<br \/>\n786 + 6=792. So the difference between 792 &#8211; 446 is 346.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Add to find the difference. Check your answer.<\/strong><br \/>\nQuestion 3.<br \/>\n521 \u2212 364 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20323\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-4.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 4\" width=\"577\" height=\"59\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-4.png 577w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-4-300x31.png 300w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 521 &#8211; 364 is 157.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 364 and add hundred once which is 1\u00d7100= 100 and the value will be 364 + 100= 464 and then we will add five tens which is 464+50= 514 and then we will add seven. The value will be 514 + 7=521. So the difference between 521 &#8211; 364 is 157.<\/p>\n<p>Question 4.<br \/>\n856 &#8211; 213 = ______<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20324\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-5.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 5\" width=\"578\" height=\"64\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-5.png 578w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-5-300x33.png 300w\" sizes=\"(max-width: 578px) 100vw, 578px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 856 &#8211; 213 is 643<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 213 and add hundred six times which is 6\u00d7100= 600 and the value will be 213 + 600= 813 and then we will add four tens which is 813+40= 853 and then we will add three. The value will be 853 + 3=856. So the difference between 856 &#8211; 213 is 643.<\/p>\n<p>Question 5.<br \/>\n492 \u2212 137 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20325\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-6.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 6\" width=\"586\" height=\"55\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-6.png 586w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-6-300x28.png 300w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 492 &#8211; 137 is 355.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 137 and add hundred three times which is 3\u00d7100= 300 and the value will be 137 + 300= 437 and then we will add eight tens which is 437+50= 487 and then we will add five. The value will be \u00a0487+ 5=492. So the difference between 492 &#8211; 137 is 355.<\/p>\n<p>Question 6.<br \/>\n<strong>Number Sense<\/strong><br \/>\nWrite the equation shown by the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20326\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-7.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 7\" width=\"480\" height=\"117\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-7.png 480w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-7-300x73.png 300w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><br \/>\n_____ &#8211; ______ = ______<br \/>\nAnswer:<br \/>\nThe number line equation is 642 &#8211; 221= 421.<\/p>\n<p>Explanation:<br \/>\nIn the above figure, to find the number line equation we will add all the numbers which are counted back. So the counted back numbers are 1+10+10+100+100 which is 221. So the number line equation is 642 &#8211; 221= 421.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>A machine has some bouncy balls. 115 are sold. There are 227 left. How many bouncy balls were there to start?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20327\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-8.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 8\" width=\"550\" height=\"249\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-8.png 550w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-8-300x136.png 300w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><br \/>\nEquation:<br \/>\nModel:<br \/>\n______ bouncy balls<br \/>\nAnswer:<br \/>\nThe total number of bouncy balls is 342.<\/p>\n<p>Explanation:<br \/>\nAs there are 115 bouncy balls sold and 227 are sold. So the total number of bouncy balls is 115+227= 342 bouncy balls.<\/p>\n<p>Show and Grow<\/p>\n<p>Question 7.<br \/>\nThere are some fans at a baseball game. 148 leave early. There are 182 left. How many fans were at the baseball game?<br \/>\n_____ fans<br \/>\nAnswer:<br \/>\nThe total number of fans at the baseball game is 330.<\/p>\n<p>Explanation:<br \/>\nThe number of fans left early in the baseball game is 148 fans and after that 182 fans left. So the total number of fans at the baseball game is 148 + 182= 330.<\/p>\n<p>Question 8.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nYour school collects 518 cans for a food drive. Your class collects 142 cans. Another class collects 204. How many cans did the rest of the classes collect?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20328\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-9.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 9\" width=\"134\" height=\"94\" \/><br \/>\n_____ cans<br \/>\nAnswer:<br \/>\nThe number of cans did the rest of the classes collected is 172 cans.<\/p>\n<p>Explanation:<br \/>\nThe number of food cans that the school collects for a food drive is 518 cans and my class collects 142 cans and another class collects 204 cans. The total number of food cans collected by both classes is 142 + 204 which is 346. And the total number of cans collected by the rest of the classes is 518 &#8211; 346. Here, we will use compensation subtraction as a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 46 in 346 then 346 &#8211; 46= 300. Now we will subtract<br \/>\n518 &#8211; 300= 218. Now we will subtract 46 from the result 218, which is 218 &#8211; 46= 172. So 518 &#8211; 346= 172 cans.<\/p>\n<h3><a id=\"Use_Addition_to_Subtract_Homework_&amp;_Practice_10.8\"><\/a>Use Addition to Subtract Homework &amp; Practice 10.8<\/h3>\n<p><strong>Add to find the difference. Check your answer.<\/strong><br \/>\nQuestion 1.<br \/>\n721 \u2212 314 = ____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20329\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 10\" width=\"584\" height=\"59\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10.png 584w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10-300x30.png 300w\" sizes=\"(max-width: 584px) 100vw, 584px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 721 &#8211; 314= 407.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-32512\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10\" width=\"568\" height=\"128\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10-1.png 568w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-10-1-300x68.png 300w\" sizes=\"(max-width: 568px) 100vw, 568px\" \/><br \/>\nLet&#8217;s start at 314 and add hundred four times which is 4\u00d7100= 400 and the value will be<br \/>\n314 + 400= 714 and then we will add seven by dividing the seven into two parts by 5+2 tens, which is<br \/>\n714+7= 721 and the value will be 314 + 407= 721. So the difference between 721 &#8211; 314= 407.<\/p>\n<p>Question 2.<br \/>\n654 \u2212 334 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20330\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 11\" width=\"579\" height=\"63\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11.png 579w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11-300x33.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 654 &#8211; 334 is 320.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-32638\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11-1.png\" alt=\"Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11\" width=\"571\" height=\"140\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11-1.png 571w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-11-1-300x74.png 300w\" sizes=\"(max-width: 571px) 100vw, 571px\" \/><br \/>\nLet&#8217;s start at 334 and add hundred three times which is 3\u00d7100= 300 and the value will be<br \/>\n334 + 300= 634 and then we will add twenty by dividing the twenty into two parts by 10+10, which is<br \/>\n634+20= 654 and the value will be 334 + 320= 654. So the difference between 654 &#8211; 334= 320.<\/p>\n<p>Question 3.<br \/>\nDescartes adds to find 400 \u2212 279. Is he correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20331\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-12.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 12\" width=\"489\" height=\"155\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-12.png 489w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-12-300x95.png 300w\" sizes=\"(max-width: 489px) 100vw, 489px\" \/><br \/>\nAnswer:<br \/>\nYes, Descartes is correct.<\/p>\n<p>Explanation:<br \/>\nYes, Descartes is correct. By adding the number of jumps 1+20+100 we will get 121. So by adding 121+279 we will get 400. So Descartes is correct.<\/p>\n<p>Question 4.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThere are some people in a national park. 124 of them leave. There are 535 people left. How many people were in the park to start?<br \/>\n______ people<br \/>\nAnswer:<br \/>\nThe number of people in the park yet to start is 411 people.<\/p>\n<p>Explanation:<br \/>\nThe number of people leave is 124 and after that, there are 535 people left. So the total number of people were in the park to start is 535 &#8211; 124= 411 people.<\/p>\n<p>Question 5.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou have 514 tickets. You spend 220 tickets on a mug and 156 on stickers. How many tickets do you have left?<br \/>\n______ tickets<br \/>\nAnswer:<br \/>\nThe number of tickets left is 138 tickets.<\/p>\n<p>Explanation:<br \/>\nThe number of tickets we have is 514 and 220 tickets are spent on a mug and 156 tickets on stickers. So the total number of tickets left is, we will add both the tickets that were spent on mug and stickers, which is 220+156= 376 tickets. So the number of tickets left are 514-376= 138.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20332\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-13.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 13\" width=\"88\" height=\"103\" \/><br \/>\n_____ flat surfaces<br \/>\n______ vertices<br \/>\n_____ edges<br \/>\nAnswer:<br \/>\nTwo flat surfaces,<br \/>\nOne vertex,<br \/>\nOne edge.<\/p>\n<p>Explanation:<br \/>\nThe above image is a cone that has two flat surfaces, one vertex, and 1 edge.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20333\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Solutions-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.8-14.png\" alt=\"Big Ideas Math Solutions Grade 2 Chapter 10 Subtract Numbers within 1,000 10.8 14\" width=\"101\" height=\"100\" \/><br \/>\n_____ flat surfaces<br \/>\n______ vertices<br \/>\n_____ edges<br \/>\nAnswer:<br \/>\nSix flat surfaces,<br \/>\nTwelve edges,<br \/>\nEight vertices.<\/p>\n<p>Explanation:<br \/>\nThe above image is a cube that has six flat surfaces, twelve edges, and eight vertices.<\/p>\n<h3><a id=\"Lesson_10.9_Explain_Subtraction_Strategies\"><\/a>Lesson 10.9 Explain Subtraction Strategies<\/h3>\n<p><strong>Explore and Grow<\/strong><\/p>\n<p>Use two different strategies to find 474 \u2212 119.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20334\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-1.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.9 1\" width=\"341\" height=\"187\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-1.png 341w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-1-300x165.png 300w\" sizes=\"(max-width: 341px) 100vw, 341px\" \/><br \/>\nAnswer:<br \/>\nThe two different strategies used are Regrouping and Compensation.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo 474 &#8211; 119 we get 355.<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 19 in 119 then 119 &#8211; 19= 100. Now we will subtract<br \/>\n474 &#8211; 100= 374. Now we will subtract 19 from the result 374, which is 374 &#8211; 19= 355. So 474 &#8211; 119= 355.<\/p>\n<p>Explain why you chose one of your strategies.<br \/>\n________________________<br \/>\n________________________<br \/>\nAnswer:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo we will choose compensation subtraction.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Choose any strategy to solve. Explain how you solved.<\/strong><br \/>\nQuestion 1.<br \/>\n477 \u2212 224 = _____<br \/>\n___________________________<br \/>\n___________________________<br \/>\nAnswer:<br \/>\nBy regrouping subtraction 477 &#8211; 224= 253.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 477 &#8211; 224= 253.<\/p>\n<p>Question 2.<br \/>\n686 \u2212 397 = _____<br \/>\n___________________________<br \/>\n___________________________<br \/>\nAnswer:<br \/>\nBy regrouping subtraction 686 &#8211; 397= 289.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 686 &#8211; 397= 289.<\/p>\n<p><strong>Apply and Grow: Practice<\/strong><\/p>\n<p><strong>Choose any strategy to solve. Explain how you solved.<\/strong><br \/>\nQuestion 3.<br \/>\n502 \u2212 321 = _____<br \/>\n_______________________<br \/>\n_______________________<br \/>\nAnswer:<br \/>\nBy regrouping subtraction 502 &#8211; 321= 181.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 502 &#8211; 321= 181.<\/p>\n<p>Question 4.<br \/>\n900 \u2212 756 = _____<br \/>\n________________________<br \/>\n_______________________<br \/>\nAnswer:<br \/>\nBy regrouping subtraction 900 &#8211; 756= 144.<\/p>\n<p>Explanation:<br \/>\nRegrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 900 &#8211; 756= 144.<\/p>\n<p>Question 5.<br \/>\n<strong>Reasoning<\/strong><br \/>\nYour friend solves a subtraction problem. Write the problem your friend solves. Explain what strategy was used to solve.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20335\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-2.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.9 2\" width=\"341\" height=\"111\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-2.png 341w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-2-300x98.png 300w\" sizes=\"(max-width: 341px) 100vw, 341px\" \/><br \/>\n______ &#8211; _____ = _____<br \/>\n__________________________<br \/>\n__________________________<br \/>\nAnswer:<br \/>\nThe number line equation is 335 &#8211; 125= 210.<\/p>\n<p>Explanation:<br \/>\nThe strategy which was used by my friend to solve is using the number line. And the problem which was solved by my friend is, the count jump starts from 125 and the count is\u00a0 100+100+10 which is 210, and the number line equation is 335 &#8211; 125= 210.<\/p>\n<p><strong>Think and Grow: Modeling Real Life<\/strong><\/p>\n<p>Choose any strategy to solve. Explain how you solved.<br \/>\nThere are 941 songs in a music library. 365 of them are pop songs. 189 are rock songs. How many songs are not pop songs?<br \/>\nSubtraction equation:<br \/>\n______ songs<br \/>\nAnswer:<br \/>\nThe number of songs that are not pop songs is 576 songs.<\/p>\n<p>Explanation:<br \/>\nThe total number of songs in a music library is 941 songs. And in that 365 of them are pop songs and 189 are rock songs. So the number of songs that are not pop songs is 941 &#8211; 365 which is 576 songs are not pop songs.<\/p>\n<p><strong>Show and Grow<\/strong><\/p>\n<p><strong>Choose any strategy to solve. Explain how you solved.<\/strong><br \/>\nQuestion 6.<br \/>\nThere are 743 penguins in a colony. 235 are in the water. 159 are in caves. How many penguins are not in the water?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20336\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-3.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.9 3\" width=\"75\" height=\"108\" \/><br \/>\n_____ penguins<br \/>\nAnswer:<br \/>\nThe number of penguins that are not in water is 508 penguins.<\/p>\n<p>Explanation:<br \/>\nThe total number of penguins in a colony is 743 penguins. And a number of penguins in the water is 235 penguins, and in caves, there are 159 penguins. So the number of penguins that are not in water is 743 &#8211; 235= 508 penguins.<\/p>\n<h3><a id=\"Explain_Subtraction_Strategies_Homework_&amp;_Practice_10.9\"><\/a>Explain Subtraction Strategies Homework &amp; Practice 10.9<\/h3>\n<p><strong>Choose any strategy to solve. Explain how you solved.<\/strong><br \/>\nQuestion 1.<br \/>\n408 \u2212 196 = _____<br \/>\n__________________________________<br \/>\n__________________________________<br \/>\nAnswer:<br \/>\nBy compensation subtraction 408 &#8211; 196= 212.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will add 4 to the number 196 then 196 + 4= 200. Now we will subtract<br \/>\n408 &#8211; 200= 208. Now we will add 4 to the result 208, which is 208 + 4= 212. So 408 &#8211; 196= 212.<\/p>\n<p>Question 2.<br \/>\n723 \u2212 515 = ____<br \/>\n______________________________<br \/>\n______________________________<br \/>\nAnswer:<br \/>\nBy compensation subtraction 723 &#8211; 515= 208.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, we will subtract 15 from the number 515 then 515 &#8211; 15= 500. Now we will subtract 723 &#8211; 500= 223. Now we will subtract 15 to the result 223, which is 223 &#8211; 15= 208. So 723 &#8211; 515= 208.<\/p>\n<p>Question 3.<br \/>\n<strong>DIG DEEPER!<\/strong><br \/>\nNewton wants to use mental math to find 452 \u2212 239. Is this a good strategy for him to use? Explain.<br \/>\n___________________________<br \/>\n___________________________<br \/>\nAnswer:<br \/>\nBy compensation subtraction 452 &#8211; 239= 213.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a good strategy because compensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is quite an effective way of subtraction. So by the compensation method, we will subtract 39 from the number 239 then<br \/>\n239 &#8211; 39= 200. Now we will subtract 452 &#8211; 200= 252. Now we will subtract 39 to the result 252, which is<br \/>\n252 &#8211; 39= 213. So 452 &#8211; 239= 213.<\/p>\n<p>Question 4.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\n767 people work at a store. 205 are cashiers. 314 stock shelves. How many people are not cashiers? Explain.<br \/>\n______ people<br \/>\n_____________________________<br \/>\n_____________________________<br \/>\nAnswer:<br \/>\nThe number of people who are not cashiers is 562 people.<\/p>\n<p>Explanation:<br \/>\nThe total number of people in the work at a store is 767. And the cashiers are 205 people, and the stock shelves are 314. So the people who are not cashiers is 767 &#8211; 205= 562 people are not cashiers.<\/p>\n<p>Question 5.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nYou have a pack of 900 craft sticks. You use 638 for a project. Your friend uses 127. How many craft sticks were not used? Explain.<br \/>\n______ craft sticks<br \/>\n____________________________<br \/>\n____________________________<br \/>\nAnswer:<br \/>\nThe number of sticks that are not used is 135 sticks.<\/p>\n<p>Explanation:<br \/>\nThe total number of craft sticks in a pack is 900 sticks. And in that 638 sticks are used for a project, and a friend uses 127 sticks. So the total number of sticks that are not used is 638 + 127= 765. And the number of craft sticks that are not used is 900 &#8211; 765= 135 sticks.<\/p>\n<p><strong>Review &amp; Refresh<\/strong><\/p>\n<p>Question 6.<br \/>\nCircle the longer object.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20337\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4.png\" alt=\"Big Ideas Math Answer Key Grade 2 Chapter 10 Subtract Numbers within 1,000 10.9 4\" width=\"471\" height=\"80\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4.png 471w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4-300x51.png 300w\" sizes=\"(max-width: 471px) 100vw, 471px\" \/><br \/>\nAnswer:<br \/>\nThe pen is longer than the eraser.<\/p>\n<p>Explanation:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-32405\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4-1.png\" alt=\"Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4\" width=\"471\" height=\"80\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4-1.png 471w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answer-Key-Grade-2-Chapter-10-Subtract-Numbers-within-1000-10.9-4-1-300x51.png 300w\" sizes=\"(max-width: 471px) 100vw, 471px\" \/><br \/>\nIn the above image, we can see that the pen is longer than the eraser. So we will round off the pen.<\/p>\n<h3><a id=\"Subtract_Numbers_within_1,000_Performance_Task\"><\/a>Subtract Numbers within 1,000 Performance Task<\/h3>\n<p>The table shows the number of laps that four cars complete in a racing season.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20338\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-1.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 1\" width=\"149\" height=\"169\" \/><br \/>\nQuestion 1.<br \/>\nHow many fewer laps does the blue car complete than the yellow car?<br \/>\n_____ laps<br \/>\nAnswer:<br \/>\n57 fewer laps do the blue car complete than the yellow car.<\/p>\n<p>Explanation:<br \/>\nThe number of laps for the blue car is 217 laps and the laps of the yellow car is 274. So 274 &#8211; 217= 57 fewer laps does the blue car complete than the yellow car.<\/p>\n<p>Question 2.<br \/>\nHow many more laps does the red car complete than the green car?<br \/>\n_____ laps<br \/>\nAnswer:<br \/>\n66 more laps the red car complete than the green car.<\/p>\n<p>Explanation:<br \/>\nThe number of laps does the red car completes is 300, and the number of laps does the green car completes is 234. So 300 &#8211; 234= 66 many more laps does the red car complete than the green car.<\/p>\n<p>Question 3.<br \/>\nThe purple car completes 500 laps and the orange car completes 250 laps. Order the cars from the greatest number of laps to the least number of laps.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20339\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-2.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 2\" width=\"142\" height=\"58\" \/><br \/>\n_____, _____, _____, _____, _____, ______<br \/>\nAnswer:<br \/>\n500, 300, 274, 250, 234, 217.<\/p>\n<p>Explanation:<br \/>\nThe number of laps completed by the red car is 300 laps,<br \/>\nThe number of laps completed by the yellow car is 274 laps,<br \/>\nThe number of laps completed by the green car is 234 laps,<br \/>\nThe number of laps completed by the blue car is 217 laps,<br \/>\nThe number of laps completed by the purple car is 500 laps,<br \/>\nThe number of laps completed by the orange car is 250 laps.<br \/>\nSo the order of the cars from the greatest number of laps to the least number of laps is<br \/>\npurple car, red car, yellow car, orange car, green car, and the blue car which is<br \/>\n500, 300, 274, 250, 234, 217.<\/p>\n<p>Question 4.<br \/>\nHow many cars complete an even number of laps?<br \/>\n_____ cars<br \/>\nAnswer:<br \/>\nThe total number of cars that complete an even number of laps is 3 laps.<\/p>\n<p>Explanation:<br \/>\nThe number of cars that complete an even number of laps is a red car with 300 laps, yellow car with 274 laps, a green car with 234 laps. So the total number of cars that complete an even number of laps is 3 laps.<\/p>\n<p>Question 5.<br \/>\nThe red and yellow cars are on Team Go Fast. The green and blue cars are on Team Speed. Which team completes more laps? How many more laps?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20340\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-3.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 3\" width=\"652\" height=\"140\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-3.png 652w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-3-300x64.png 300w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><br \/>\nAnswer:<br \/>\nThe team go fast completes more laps than the team speed. And the number of more laps is 123 laps.<\/p>\n<p>Explanation:<br \/>\nThe red car completes 300 laps and the yellow car completes 274 laps. As the red and yellow cars are the team, so the total number of laps that both cars completed is 300 + 274= 574 laps. And the green car completes 234 laps and the blue car completes 217 laps. So the total number of laps that both cars completed is 234 + 217=\u00a0 451 laps. So the team go fast completes more laps than the team speed. And the number of more laps is<br \/>\n574 &#8211; 451= 123 laps.<\/p>\n<h3>Subtract Numbers within 1,000 Activity<\/h3>\n<p>Greatest and Least<br \/>\nTo Play: Roll a die 3 times and record each number. Use the numbers to write the greatest and the least three-digit numbers. Find the difference and record your answer.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20366\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-4.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 4\" width=\"682\" height=\"748\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-4.png 682w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-4-274x300.png 274w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/><\/p>\n<h3><a id=\"Subtract_Numbers_within_1,000_Chapter_Practice\"><\/a>Subtract Numbers within 1,000 Chapter Practice<\/h3>\n<p><strong>10.1 Subtract 10 and 100<\/strong><\/p>\n<p>Question 1.<br \/>\n230 \u221210 = _____<br \/>\nAnswer:<br \/>\nThe difference between 230 &#8211; 10 is 220.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 230-10, we will pick the tens digit number in 230 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n3 &#8211; 1= 2<br \/>\ntherefore 230 &#8211; 10= 220.<\/p>\n<p>Question 2.<br \/>\n956 \u2212 10 = _____<br \/>\nAnswer:<br \/>\nThe difference between 956 &#8211; 10 is 946.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 956 -10, we will pick the tens digit number in 956 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5 &#8211; 1= 4<br \/>\ntherefore 956 &#8211; 10= 946.<\/p>\n<p>Question 3.<br \/>\n597 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference between 597 &#8211; 100 is 497.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 597 &#8211; 100, we will pick the hundred digit number in 597 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n5 &#8211; 1= 4<br \/>\ntherefore 597 &#8211; 100= 497.<\/p>\n<p>Question 4.<br \/>\n384 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference between 384 &#8211; 100 is 284.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 384-100, we will pick the hundred digit number in 384 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n3 &#8211; 1= 2<br \/>\ntherefore 384 &#8211; 100= 284.<\/p>\n<p>Question 5.<br \/>\n705 \u2212 10 = _____<br \/>\nAnswer:<br \/>\nThe difference between 705 &#8211; 10 is 695.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 705-10, we will pick the tens digit number in 705 and in 10. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n70 &#8211; 1= 69<br \/>\ntherefore 705 &#8211; 10= 695.<\/p>\n<p>Question 6.<br \/>\n157 \u2212 100 = _____<br \/>\nAnswer:<br \/>\nThe difference between 157 &#8211; 100 is 57.<\/p>\n<p>Explanation:<br \/>\nTo find the difference of 157-100, we will pick the hundred digit number in 157 and in 100. Then we will subtract both the numbers which we have picked. So the result will be<br \/>\n1 &#8211; 1= 0<br \/>\ntherefore 157 &#8211; 100= 057.<\/p>\n<p><strong>10.2 Use a Number Line to Subtract Hundreds and Tens<\/strong><\/p>\n<p>Question 7.<br \/>\n481 \u2212 250 = ______<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20342\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-7.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 7\" width=\"528\" height=\"36\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-7.png 528w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-7-300x20.png 300w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 481 &#8211; 250 is 231.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 250 and add hundred two times which is 2\u00d7100= 200 and the value will be 250 + 200= 450 and then we will add three tens which is 450+30= 480 and then we will add one. The value will be 480 + 1=481. So the difference between 481 &#8211; 250 is 231.<\/p>\n<p>Question 8.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\n325 crackers come in a box. You set out 160 for a party. How many crackers are left in the box?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20343\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-8.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 8\" width=\"84\" height=\"107\" \/><br \/>\n_____ crackers<br \/>\nAnswer:<br \/>\nThe number of crackers left is 165.<\/p>\n<p>Explanation:<br \/>\nThe total number of crackers in the box is 325, and in that 160 are set for a party. So the number of crackers left in the box is 325 &#8211; 160= 165 crackers left.<\/p>\n<p><strong>10.3 Use a Number Line to SubtractThree-Digit Numbers<\/strong><\/p>\n<p>Question 9.<br \/>\n604 \u221297 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20344\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-9.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 9\" width=\"534\" height=\"39\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-9.png 534w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-9-300x22.png 300w\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 604 &#8211; 97 is 507.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start from 604 and count back ninety once and the value will be 604 &#8211; 90= 514 and then we will count back seven, and the value will be 514 &#8211; 7=507. So the difference between 604 &#8211; 97= 507.<\/p>\n<p>Question 10.<br \/>\nNumber Sense<br \/>\nWrite the equation shown by the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20345\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-10.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 10\" width=\"427\" height=\"117\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-10.png 427w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-10-300x82.png 300w\" sizes=\"(max-width: 427px) 100vw, 427px\" \/><br \/>\n_____ &#8211; _____ = ______<br \/>\nAnswer:<br \/>\nThe equation is 782 &#8211; 325= 457.<\/p>\n<p>Explanation:<br \/>\nIn the above image, given it is started from 782 and count back to 300 then the result is 782 &#8211; 300= 482, and then it was counted back to 20 then the value is 482 &#8211; 20= 462, then the value is counted back to 5 and the value is 462 &#8211; 5= 457.<\/p>\n<p><strong>10.4 Use Compensation to Subtract Three-Digit Numbers<\/strong><\/p>\n<p><strong>Use compensation to subtract.<\/strong><br \/>\nQuestion 11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20346\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-11.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 11\" width=\"276\" height=\"156\" \/><br \/>\nAnswer:<\/p>\n<p>Question 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20347\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-12.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 12\" width=\"276\" height=\"156\" \/><br \/>\nAnswer:<\/p>\n<p>Question 13.<br \/>\n<strong>YOU BE THE TEACHER<\/strong><br \/>\nDescartes uses compensation to find 331 \u2212 214. Is he correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20348\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-13.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 13\" width=\"399\" height=\"189\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-13.png 399w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-13-300x142.png 300w\" sizes=\"(max-width: 399px) 100vw, 399px\" \/><br \/>\nAnswer:<br \/>\nYes, Descartes is correct.<\/p>\n<p>Explanation:<br \/>\nYes, Descartes is correct. As Compensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is a quite effective way of subtraction.<br \/>\nSo by the compensation method, Descartes subtracted 14 to the number 214 then 214 &#8211; 14= 200. Now Descartes subtracted 331 &#8211; 200= 131.<\/p>\n<p><strong>10.5 Use Models to Subtract Three-Digit Numbers<\/strong><\/p>\n<p>Question 14.<br \/>\n992 &#8211; 645 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20349\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 14\" width=\"437\" height=\"195\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14.png 437w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14-300x134.png 300w\" sizes=\"(max-width: 437px) 100vw, 437px\" \/><br \/>\nAnswer: 347<br \/>\n<img loading=\"lazy\" class=\"alignnone size-medium wp-image-62530\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14-300x134.jpg\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14\" width=\"300\" height=\"134\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14-300x134.jpg 300w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-14.jpg 437w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>10.6 Subtract Three-Digit Numbers<\/strong><\/p>\n<p>Question 15.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20350\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-15.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 15\" width=\"152\" height=\"120\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-62531\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-15.jpg\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-15\" width=\"152\" height=\"120\" \/><\/p>\n<p>Question 16.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20351\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-16.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 16\" width=\"152\" height=\"125\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-62535\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-16.jpg\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-16\" width=\"152\" height=\"125\" \/><\/p>\n<p>Question 17.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20352\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-17.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 17\" width=\"165\" height=\"120\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-62539\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-17.jpg\" alt=\"Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-17\" width=\"165\" height=\"120\" \/><\/p>\n<p>Question 18.<br \/>\n<strong>Modeling Real Life<\/strong><br \/>\nThere are 420 T-shirts and120 pairs of shorts at a store. 135 T-shirts are sold. How many T-shirts are left?<br \/>\n_____ T-shirts<br \/>\nAnswer:<br \/>\nThe number of t-shirts left is 285.<\/p>\n<p>Explanation:<br \/>\nThe number of t-shirts is 420 and there are 120 pairs of shorts at a store. And in that 135 tshits are sold out. The remaining t-shirts is 420 &#8211; 135= 285.<\/p>\n<p><strong>10.7 Subtract from Numbers that Contain Zeros<\/strong><\/p>\n<p>Question 19.<br \/>\n600 \u2212 365 = _____<br \/>\nAnswer:<br \/>\nBy regrouping the numbers 600 &#8211; 365= 235.<\/p>\n<p>Explanation:<br \/>\nBy regrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 600 &#8211; 365= 235.<\/p>\n<p>Question 20.<br \/>\n402 \u2212 195 = _____<br \/>\nAnswer:<br \/>\nBy regrouping the numbers 402 &#8211; 195= 207.<\/p>\n<p>Explanation:<br \/>\nBy regrouping in subtraction is a process of exchanging one ten into ten ones. We use regrouping in subtraction when the minuend is smaller than the subtrahend.<br \/>\nSo we will subtract by regrouping the numbers 402 &#8211; 195= 207.<\/p>\n<p><strong>10.8 Use Addition to Subtract<\/strong><\/p>\n<p><strong>Add to find the difference. Check your answer.<\/strong><br \/>\nQuestion 21.<br \/>\n213 \u2212 102 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20353\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-21.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 21\" width=\"573\" height=\"59\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-21.png 573w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-21-300x31.png 300w\" sizes=\"(max-width: 573px) 100vw, 573px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 213 &#8211; 102 is 111.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 102 and add hundred once which is 1\u00d7100= 100 and the value will be 102 + 100= 202 and then we will add ten which is 202+10= 212 and then we will add one. The value will be 212 + 1=213. So the difference between 213 &#8211; 102 is 111.<\/p>\n<p>Question 22.<br \/>\n564 \u2212 317 = _____<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-20354\" src=\"https:\/\/ccssmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-22.png\" alt=\"Big Ideas Math Answers 2nd Grade Chapter 10 Subtract Numbers within 1,000 chp 22\" width=\"565\" height=\"61\" srcset=\"https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-22.png 565w, https:\/\/bigideasmathanswers.com\/wp-content\/uploads\/2021\/01\/Big-Ideas-Math-Answers-2nd-Grade-Chapter-10-Subtract-Numbers-within-1000-chp-22-300x32.png 300w\" sizes=\"(max-width: 565px) 100vw, 565px\" \/><br \/>\nAnswer:<br \/>\nThe difference between 564 &#8211; 317 is 247.<\/p>\n<p>Explanation:<br \/>\nLet&#8217;s start at 317 and add hundred two time which is 2\u00d7100= 200 and the value will be 317 + 200= 517 and then we will add four tens which is 517+40= 557 and then we will add seven. The value will be 557 + 7=564. So the difference between 564 &#8211; 317 is 247.<\/p>\n<p><strong>10.9 Explain Subtraction Strategies<\/strong><\/p>\n<p><strong>Choose any strategy to solve. Explain how you solved.<\/strong><br \/>\nQuestion 23.<br \/>\n573 \u2212 309 = ____<br \/>\n______________________________<br \/>\n______________________________<br \/>\n______________________________<br \/>\nAnswer:<br \/>\nBy compensation subtraction 573 &#8211; 309 is 264.<\/p>\n<p>Explanation:<br \/>\nCompensation subtraction is a good strategy because compensation subtraction is a mental math strategy for multi-digit addition which means taking away more than we need and then adding some back which is quite an effective way of subtraction. So by the compensation method, we will subtract 9 from the number 309 then<br \/>\n309 &#8211; 9= 300. Now we will subtract 573 &#8211; 300= 273. Now we will subtract 9 to the result 273, which is<br \/>\n273 &#8211; 9= 264. So 573 &#8211; 309 is 264.<\/p>\n<p><em>Conclusion:<\/em><\/p>\n<p>Detailed Big Ideas Math Grade 3 Chapter 10 Subtract Numbers within 1,000 Solutions are useful for the students to finish their homework. The step by step by step solution is helpful to become an expert in maths. If you have any queries, then post your doubts in the given below comment section. Check our site regularly to find the answers for all Big Ideas Math Book Grade 2 chapters.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Big Ideas Math Book Grade 2 Chapter 10 Subtract Numbers within 1,000 Answers are provided in a comprehensive manner for better understanding. Interested students have to solve as many questions as possible using the Big Ideas Math Answers Grade 2 Ch 10 and become pro at solving subtraction problems below 1,000. So that you can &#8230; <a title=\"Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000\" class=\"read-more\" href=\"https:\/\/bigideasmathanswers.com\/big-ideas-math-answers-grade-2-chapter-10\/\" aria-label=\"More on Big Ideas Math Answers Grade 2 Chapter 10 Subtract Numbers within 1,000\">Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":89576,"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\/2021\/04\/Big-Ideas-Math-Answers-Grade-2-Chapter-10.png","_links":{"self":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/20196"}],"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\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/comments?post=20196"}],"version-history":[{"count":1,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/20196\/revisions"}],"predecessor-version":[{"id":90269,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/20196\/revisions\/90269"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media\/89576"}],"wp:attachment":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media?parent=20196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/categories?post=20196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/tags?post=20196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}