{"id":89974,"date":"2022-03-30T17:04:34","date_gmt":"2022-03-30T11:34:34","guid":{"rendered":"https:\/\/bigideasmathanswers.com\/?p=89974"},"modified":"2022-04-07T14:45:39","modified_gmt":"2022-04-07T09:15:39","slug":"envision-math-common-core-grade-1-answer-key-topic-2","status":"publish","type":"post","link":"https:\/\/bigideasmathanswers.com\/envision-math-common-core-grade-1-answer-key-topic-2\/","title":{"rendered":"enVision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10"},"content":{"rendered":"<p>Practice with the help of <a href=\"https:\/\/bigideasmathanswers.com\/envision-math-common-core-grade-1-answer-key\/\">enVision Math Common Core Grade 1 Answer Key<\/a> <strong>Topic 2 Fluently Add and Subtract Within 10<\/strong> regularly and improve your accuracy in solving questions.<\/p>\n<h2>enVision Math Common Core 1st Grade Answers Key Topic 2 Fluently Add and Subtract Within 10<\/h2>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2220\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-1.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 1\" width=\"722\" height=\"312\" \/><br \/>\nenVision STEM Project: Protect Yourself<br \/>\nFind Out Think of things that help Journal: Make a Book Show what plants and animals survive.<br \/>\nWhat helps human survive?<br \/>\nDo we make things to help protect us?<br \/>\nJournal: Make a Book Show what you found out. In your book, also:<\/p>\n<ul>\n<li>Make a list of some things that humans make to protect themselves.<\/li>\n<li>Make up and solve addition and subtraction problems about these things.<\/li>\n<\/ul>\n<p><strong>Review What You Know<\/strong><\/p>\n<p>Question 1.<br \/>\nCircle the numbers that are the parts.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2222\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-2.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 2\" width=\"157\" height=\"148\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4178\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-1-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-1\" width=\"372\" height=\"249\" \/><br \/>\nExplanation:<br \/>\nGiven a addition expression<br \/>\n3 + 5 = 8<br \/>\nHere 3 and 5 are the parts that add to make the sum 8.<\/p>\n<p>Question 2.<br \/>\nCircle the numbers that is the whole.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2221\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-2.1.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 2.1\" width=\"160\" height=\"140\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4179\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-2-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-2\" width=\"423\" height=\"269\" \/><br \/>\nExplanation:<br \/>\nGiven an addition expression<br \/>\n3 + 5 = 8<br \/>\nHere 3 and 5 are addends and called as parts<br \/>\nThe sum 8 is called as whole.<br \/>\nThe whole is marked with a circle.<\/p>\n<p>Question 3.<br \/>\nCircle the symbol for equals.<br \/>\n+ &#8211; =<br \/>\nAnswer:<br \/>\n= is the symbol for equal.<br \/>\n+ is the symbol for addition. It is used to add two numbers.<br \/>\n&#8211; is the symbol for subtraction. It is used to find the difference between two numbers.<\/p>\n<p><strong>Understanding Addition<\/strong><\/p>\n<p>Question 4.<br \/>\nWrite an addition equation to match the picture.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2239\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6\" width=\"217\" height=\"139\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4180\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-4\" width=\"238\" height=\"144\" \/><br \/>\nExplanation:<br \/>\nNumber of basket balls = 2<br \/>\nNumber of foot balls = 4<br \/>\nAdding these two parts\u00a0 gives the addition expression =<br \/>\n2\u00a0 + 4 = 6.<br \/>\nAdding the two parts gives the whole\u00a0 = 6.<\/p>\n<p>Question 5.<br \/>\nBob sees 5 bees. Ella sees some bees. one way to make 8. They see 9 bees in all. How many bees did Ella see? Write an addition equation to solve.<br \/>\n___ + ____ = ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4181\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-5\" width=\"846\" height=\"387\" \/><\/p>\n<p><strong>Making Numbers<\/strong><\/p>\n<p>Question 6.<br \/>\nDraw counters to show one way to make 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2223\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.1.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.1\" width=\"153\" height=\"110\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4183\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Review-What-You-Know-Question-6\" width=\"434\" height=\"457\" \/><br \/>\nExplanation:<br \/>\nNumber of orange circle counters = 4<br \/>\nNumber of triangle counters = 4<br \/>\nAdding these two counters makes the whole 8.<br \/>\n4 + 4 = 8.<br \/>\nOther equations to make 8 are<br \/>\n0 + 8 = 8<br \/>\n1 + 7 = 8<br \/>\n2 + 6 = 8<br \/>\n3 + 5 = 8<br \/>\n4 + 4 = 8<br \/>\n5 + 3 = 8<br \/>\n6 + 2 = 8<br \/>\n7 + 1 = 8<br \/>\n8 + 0 = 8<br \/>\nI choose 4 + 4 = 8 equation.<\/p>\n<p><strong>Pick a Project<\/strong><\/p>\n<p>Project 2A<br \/>\nWhere would you like to fly?<br \/>\nProject: Create an Airplane Skit<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2224\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.2.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.2\" width=\"474\" height=\"275\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6981\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2A-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2A\" width=\"961\" height=\"633\" \/><\/p>\n<p>Project 2B<br \/>\nWhen does lightning flash?<br \/>\nProject: Make a Weather Calendar<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2225\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.3.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.3\" width=\"478\" height=\"272\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6982\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2B.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2B\" width=\"906\" height=\"629\" \/><\/p>\n<p>Project 2C<br \/>\nWould you like to travel in space?<br \/>\nProject: Draw a Space Travel Picture<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2226\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.4.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.4\" width=\"505\" height=\"304\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6984\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2C.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2C\" width=\"321\" height=\"493\" \/><\/p>\n<p>Project 2D<br \/>\nAre these apes or monkeys?<br \/>\nProject: Make a Poster of Apes and Monkeys<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2227\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.5.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.5\" width=\"498\" height=\"299\" \/><br \/>\nAnswer:<br \/>\nThese are Monkeys not Apes.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6986\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2D.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Pick-a-Project-2D\" width=\"451\" height=\"463\" \/><\/p>\n<h3>Lesson 2.1 Count On to Add<\/h3>\n<p><strong>Solve &amp; Share<\/strong><\/p>\n<p>You give the rabbit a number card. The rabbit puts that many carrots in the pot. Then he puts 2 more carrots in the pot. How can you find how many carrots are in the pot without counting all the carrots?<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2228\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.6.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.6\" width=\"556\" height=\"517\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2229\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.7.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.7\" width=\"999\" height=\"304\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nHow do you add 1 to any number? How do you add 2 to any number?<\/p>\n<p><strong>Guided Practice<\/strong><\/p>\n<p>Count on to find the sum.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2230\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.8.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.8\" width=\"240\" height=\"156\" \/><br \/>\nAnswer:<br \/>\n3 + 2 = 5<br \/>\nExplanation:<br \/>\nGiven<br \/>\nNumber on the bucket = 3<br \/>\nNumber of carrots\u00a0 = 2<br \/>\nadding these two to find the sum<br \/>\nAddition equation\u00a0 = 3 + 2 = 5.<br \/>\nSum = 5.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2231\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.9.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.9\" width=\"228\" height=\"149\" \/><br \/>\nAnswer:<br \/>\n8 + 2 = 10<br \/>\nExplanation:<br \/>\nGiven<br \/>\nNumber on the bucket = 8<br \/>\nNumber of apples\u00a0 = 2<br \/>\nAdding these two parts to find the sum<br \/>\nAddition equation\u00a0 =<br \/>\n8 + 2 = 10.<br \/>\nSum = 10.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2232\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.10.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.10\" width=\"227\" height=\"153\" \/><br \/>\nAnswer:<br \/>\n3 + 3 = 6<br \/>\nExplanation:<br \/>\nGiven<br \/>\nNumber on the bucket = 3<br \/>\nNumber of Tomatoes\u00a0 = 3<br \/>\nAdding these two parts to find the sum<br \/>\nAddition equation\u00a0 =<br \/>\n3 + 3 = 6.<br \/>\nSum = 6.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2233\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.11.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.11\" width=\"227\" height=\"141\" \/><br \/>\nAnswer:<br \/>\n7 + 2 = 9<br \/>\nExplanation:<br \/>\nGiven<br \/>\nNumber on the bucket = 7<br \/>\nNumber of Bell peppers\u00a0 = 2<br \/>\nAdding these two parts to find the sum<br \/>\nAddition equation\u00a0 =<br \/>\n7 + 2 = 9.<br \/>\nSum = 9.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Count on to add.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2234\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.12.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.12\" width=\"848\" height=\"284\" \/><\/p>\n<p>Question 5.<br \/>\n2 + 3 = ____<br \/>\nAnswer:<br \/>\n2 + 3 = 5<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4197\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-5\" width=\"468\" height=\"195\" \/><br \/>\nExplanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n2 + 3 = 5<br \/>\n3 is added to 2 to make it 5<br \/>\nwe add +1 three times to 2.<br \/>\nstarting number is 2<br \/>\nfrom 2 we add +1<br \/>\n2 + 1 = 3<br \/>\nfrom 3 we add +1<br \/>\n3 + 1 = 4<br \/>\nfrom 4 we add +1<br \/>\n4 + 1 = 5.<br \/>\nafter adding +1 three times to 2 we get the sum 5<br \/>\n2 + 1 + 1 + 1 = 5.<br \/>\n2 + 3 = 5.<\/p>\n<p>Question 6.<br \/>\n8 + 1 = _____<br \/>\nAnswer:<br \/>\n8 + 1 = 9<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4198\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-6\" width=\"479\" height=\"238\" \/><br \/>\nExplanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n8 + 1 = 9<br \/>\n1 is added to 8 to make it 9<br \/>\nwe add +1 to 8.<br \/>\nstarting number is 8<br \/>\nfrom 8 we add +1<br \/>\n8 + 1 = 9.<\/p>\n<p>Question 7.<br \/>\n7 + 1 = ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4351\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-7.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-7\" width=\"512\" height=\"234\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n7 + 1 = 8<br \/>\n1 is added to 7 to make it 8<br \/>\nwe add +1 to 7.<br \/>\nstarting number is 7.<br \/>\nfrom 7 we add +1<br \/>\n7 + 1 = 8.<\/p>\n<p>Question 8.<br \/>\n9 + 1 = ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4352\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-8\" width=\"512\" height=\"234\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n9 + 1 = 10<br \/>\n1 is added to 9 to make it 10<br \/>\nwe add +1 to 9.<br \/>\nstarting number is 9.<br \/>\nfrom 9 we add +1<br \/>\n9 + 1 = 10.<\/p>\n<p>Question 9.<br \/>\n4 + 3 = ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4353\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-9\" width=\"527\" height=\"292\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n4 + 3 = 7<br \/>\n3 is added to 4 to make it 7<br \/>\nwe add +1 three times to 4.<br \/>\nstarting number is 4<br \/>\nfrom 4 we add +1<br \/>\n4 + 1 = 5<br \/>\nfrom 5 we add +1<br \/>\n5 + 1 = 6<br \/>\nfrom 6 we add +1<br \/>\n6 + 1 = 7.<br \/>\nafter adding +1 three times to 4 we get the sum 7<br \/>\n4 + 1 + 1 + 1 = 7.<br \/>\n4 + 3 = 7.<\/p>\n<p>Question 10.<br \/>\n9 = 6+ ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4354\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-10.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-10\" width=\"527\" height=\"292\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the\u00a0 equation.<br \/>\n9 = 6 +<br \/>\nto get sum 9 from 6 we add 3 to 6.<br \/>\n3 is added to 6 to make it 9<br \/>\nwe add +1 three times to 6.<br \/>\nstarting number is 6<br \/>\nfrom 6 we add +1<br \/>\n6 + 1 = 7<br \/>\nfrom 7 we add +1<br \/>\n7 + 1 = 8<br \/>\nfrom 8 we add +1<br \/>\n8 + 1 = 9.<br \/>\nafter adding +1 three times\u00a0 to 6 we get the required sum 9<br \/>\n6 + 1 + 1 + 1\u00a0 = 6 + 3 =\u00a0 9.<br \/>\n9 = 6 + 3.<\/p>\n<p>Question 11.<br \/>\n2 + 6 = ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4355\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-11\" width=\"520\" height=\"236\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n2 + 6 = 8<br \/>\n6 is added to 2 to make it 8<br \/>\nwe add +1 six times to 2.<br \/>\nstarting number is 2<br \/>\nfrom 2 we add +1<br \/>\n2 + 1 = 3<br \/>\nfrom 3 we add +1<br \/>\n3 + 1 = 4<br \/>\nfrom 4 we add +1<br \/>\n4 + 1 = 5.<br \/>\nfrom 5 we add +1<br \/>\n5 + 1 = 6<br \/>\nfrom 6 we add +1<br \/>\n6 + 1 = 7<br \/>\nfrom 7 we add +1<br \/>\n7 + 1 = 8.<br \/>\nafter adding +1 six times to 2 we get the sum 8<br \/>\n2 + 1 + 1 + 1 + 1 +1 +1 = 8.<br \/>\n2 + 6\u00a0 = 8.<\/p>\n<p>Question 12.<br \/>\n6 = 5 + ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4356\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-12.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-12\" width=\"544\" height=\"282\" \/><\/p>\n<p>Explanation:<br \/>\nusing number line to solve the\u00a0 equation.<br \/>\n6 = 5 +<br \/>\n6 &#8211; 5 = 1<br \/>\nto get sum 6 from 5 we add 1 to 6.<br \/>\n1 is added to 5 to make it 6<br \/>\nwe add +1\u00a0 to 5.<br \/>\nstarting number is 5<br \/>\nfrom 5 we add +1<br \/>\n5 + 1 = 6<br \/>\n6 = 5 + 1.<\/p>\n<p>Question 13.<br \/>\n5 + 3 = ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4357\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-13.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-13\" width=\"517\" height=\"264\" \/><br \/>\nExplanation:<br \/>\nusing number line to solve the addition equation.<br \/>\n5 + 3 = 8<br \/>\n3 is added to 5 to make it 8<br \/>\nwe add +1 three times to 5.<br \/>\nstarting number is 5<br \/>\nfrom 5 we add +1<br \/>\n5 + 1 = 6<br \/>\nfrom 6 we add +1<br \/>\n6 + 1 = 7<br \/>\nfrom 7 we add +1<br \/>\n7 + 1 = 8.<br \/>\nafter adding +1 three times to 5 we get the sum 8<br \/>\n5 + 1 + 1 + 1 = 8.<br \/>\n5 + 3 = 8.<\/p>\n<p>Question 14.<br \/>\n<strong>Number Sense<\/strong><br \/>\nCircle True or False. Count on to help you.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2236\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.13.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.13\" width=\"887\" height=\"132\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4359\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Independent-Practice-Question-14.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add- Independent-Practice-Question-14\" width=\"1001\" height=\"759\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Draw a picture and write an equation to help solve each problem.<\/p>\n<p>Question 15.<br \/>\nModel<br \/>\nDana has 7 grapes.<br \/>\nShe gets 3 more.<br \/>\nHow many grapes now?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2235\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.13.1.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.13.1\" width=\"424\" height=\"215\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4609\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-15.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-15\" width=\"822\" height=\"560\" \/><br \/>\nExplanation:<br \/>\nNumber of grapes Dana has = 7<br \/>\nNumber of grapes she gets = 3<br \/>\nTotal number of grapes Dana has now = 7 + 3 = 10.<\/p>\n<p>Question 16.<br \/>\nModel<br \/>\nAnna fills 6 bowls. Jason fills some more. Now there are 9 bowls filled. How many bowls did Jason fill?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2237\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.14.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.14\" width=\"420\" height=\"206\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4615\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-16.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-16\" width=\"927\" height=\"747\" \/><\/p>\n<p>Question 17.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nMax has 1 more carrot than Jena. Jena has 3 more carrots than Sal. Sal has 4 carrots.<br \/>\nWrite how many carrots each person has.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2238\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-6.15.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 6.15\" width=\"277\" height=\"59\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4616\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-17.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Problem-Solving-Question-17\" width=\"724\" height=\"422\" \/><\/p>\n<p>Question 18.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nWhich is the sum for 5 + 2?<br \/>\nA. 3<br \/>\nB. 6<br \/>\nC. 7<br \/>\nD. 8<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2240\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answer-Key-Topic-2-Fluently-Add-and-Subtract-Within-10.16.png\" alt=\"Envision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10.16\" width=\"332\" height=\"244\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4618\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Assessment-Practice-Question-18.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.1-Count-On-to-Add-Assessment-Practice-Question-18\" width=\"628\" height=\"412\" \/><\/p>\n<h3>Lesson 2.2 Doubles<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\nEmily and I have the same number of toys. How many toys could each of us have? How many toys do we have in all? You can use cubes to help.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2241\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.17.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.17\" width=\"772\" height=\"419\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2242\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.18.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.18\" width=\"984\" height=\"343\" \/><br \/>\nAnswer:<\/p>\n<p><strong>Convince Me!<\/strong><\/p>\n<p>Is 6 + 4 a double? Explain.<br \/>\nAnswer:<br \/>\nNo, 6 + 4 is not a double.<br \/>\nbecause the first addend is 6 and the second addend is 4 their is difference of 2 in between the two addends<br \/>\n6 &#8211; 4 = 2.<br \/>\n6 + 6 is a double<br \/>\n4 + 4 is double for the given equation.<\/p>\n<p><strong>Guided Practice<\/strong><\/p>\n<p>Write the sum for each double.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2243\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.19.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.19\" width=\"220\" height=\"136\" \/><br \/>\nAnswer:<br \/>\n4 + 4 = 8<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 4 cubes and the second cube stick has 4 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n4 + 4 = 8<br \/>\ngives the sum 8.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2244\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.20.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.20\" width=\"229\" height=\"136\" \/><br \/>\nAnswer:<br \/>\n5 + 5 = 10<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 5 cubes and the second cube stick has 5 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n5 + 5 = 10<br \/>\ngives the sum 10.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2245\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.21.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.21\" width=\"220\" height=\"143\" \/><br \/>\nAnswer:<br \/>\n3 + 3 = 6<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 3 cubes and the second cube stick has 3 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n3 + 3 = 6<br \/>\ngives the sum 6.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2246\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-6.22.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 6.22\" width=\"224\" height=\"153\" \/><br \/>\nAnswer:<br \/>\n2 + 2 = 4<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 2 cubes and the second cube stick has 2 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n2 + 2 = 4<br \/>\ngives the sum 4.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Write the sum for each doubles fact.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2247\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.1.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.1\" width=\"231\" height=\"143\" \/><br \/>\nAnswer:<br \/>\n5 + 5 = 10<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 5 cubes and the second cube stick has 5 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n5 + 5 = 10<br \/>\ngives the sum 10<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2248\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.2.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.2\" width=\"227\" height=\"134\" \/><br \/>\nAnswer:<br \/>\n1 + 1 = 2<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 1 cubes and the second cube stick has 1 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n1 + 1 = 2<br \/>\ngives the sum 2.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2249\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.3.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.3\" width=\"228\" height=\"133\" \/><br \/>\nAnswer:<br \/>\n3 + 3 = 6<br \/>\nExplanation:<br \/>\nGiven a cube stick<br \/>\nThe first cube stick have 3 cubes and the second cube stick has 3 cubes .<br \/>\nBoth the cubes have same number of cubes and each cube have a pair so they form doubles.<br \/>\nOn Adding these doubles<br \/>\n3 + 3 = 6<br \/>\ngives the sum 6.<\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2250\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.4.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.4\" width=\"85\" height=\"126\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4623\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-8\" width=\"325\" height=\"180\" \/><\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2251\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.5.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.5\" width=\"92\" height=\"129\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4624\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-9\" width=\"289\" height=\"162\" \/><\/p>\n<p>Question 10.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2252\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.6.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.6\" width=\"89\" height=\"137\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4625\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-10.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Independent-Practice-Question-10\" width=\"151\" height=\"138\" \/><br \/>\nExplanation:<br \/>\nAdding zeros gives the sum 0.<br \/>\nAdding any number to 0 gives the sum the number itself.<\/p>\n<p>Question 11.<br \/>\n<strong>Vocabulary<\/strong><br \/>\nDraw a picture to show a doubles fact. Then write the addition equation to match.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2253\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.7.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.7\" width=\"760\" height=\"233\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4630\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Vocabulary-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Vocabulary-Question-11\" width=\"821\" height=\"445\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Draw a picture and solve each problem.<\/p>\n<p>Question 12.<br \/>\n<strong>Make Sense<\/strong><br \/>\nNeela makes 4 pies. John makes the same number of pies. How many pies do they make in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2254\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.8.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.8\" width=\"422\" height=\"153\" \/><br \/>\n__ pies<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4633\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Vocabulary-Question-12.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Vocabulary-Question-12\" width=\"816\" height=\"385\" \/><\/p>\n<p>Question 13.<br \/>\n<strong>Make Sense<\/strong><br \/>\nKim has 2 pockets. She has 5 dimes in each pocket. How many dimes does Kim have in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2255\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.9.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.9\" width=\"313\" height=\"152\" \/><br \/>\n__ dimes<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4636\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Problem-Solving-Make-Sense-Question-13.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Problem-Solving-Make-Sense-Question-13\" width=\"798\" height=\"407\" \/><\/p>\n<p>Question 14.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nCan a doubles fact have a sum of 9? Draw a picture to find out. Circle Yes or No.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2256\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.10.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.10\" width=\"413\" height=\"209\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-4638\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Problem-Solving-Higher-Order-Thinking-Question-14.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.2-Doubles-Problem-Solving-Higher-Order-Thinking-Question-14\" width=\"847\" height=\"802\" \/><\/p>\n<p>Question 15.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nWhich doubles fact has a sum of 6?<br \/>\nA. 2 + 2<br \/>\nB. 3 + 2<br \/>\nC. 3 + 3<br \/>\nD. 4 + 4<br \/>\nAnswer:<br \/>\n2 + 2 = 4<br \/>\n3 + 2 = 5<br \/>\n3 + 3 = 6<br \/>\n4 + 4 = 8<br \/>\n2 + 2, 3 + 3, 4 + 4 are all the doubles. 3+2 is not a double.<br \/>\n3 + 3 double fact have the sum 6.<br \/>\nC is the answer.<\/p>\n<h3>Lesson 2.3 Near Doubles<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\nLook at these addition problems.<br \/>\n3 + 3 2 + 2 4 + 5 3 + 4 2 + 3 4 + 4<br \/>\nHow are they alike? How are they different? Sort them into two groups and write them in the buckets.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2257\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.11.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.11\" width=\"820\" height=\"503\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-5046\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Solve- Share\" width=\"885\" height=\"504\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2258\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.12.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.12\" width=\"980\" height=\"290\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nHow does knowing 3 + 3 help you find 3 + 4?<br \/>\nAnswer:<br \/>\nsum of 3 + 4 = 7 to solve this<br \/>\n3 + 3 = 6<br \/>\n6 + 1 gives the sum 7.<br \/>\ndouble 3 + 3 plus 1 more gives the sum of 3 + 4.<\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nUse a doubles fact to find each Practice near doubles fact.<\/p>\n<p>Question 1.<br \/>\n2 + 3 = ?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2259\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.13.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.13\" width=\"272\" height=\"97\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5064\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-1\" width=\"653\" height=\"477\" \/><br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n2 and 3 are the addends<br \/>\n2 is less than 3. So,we take 2 and double it<br \/>\n2 + 2 = 4<br \/>\n2 + 3 = 5<br \/>\n5 is 4 plus 1 more<\/p>\n<p>Question 2.<br \/>\n2 + 4 = ?<br \/>\n___ + __ = ___<br \/>\nSo, __ + __ = ___.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5066\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-2\" width=\"653\" height=\"477\" \/><br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n2 and 4 are the addends<br \/>\n2 is less than 4. So,we take 2 and double it<br \/>\n2 + 2 = 4<br \/>\n2 + 4 = 6<br \/>\n6 is 4 plus 2 more.<\/p>\n<h3>Lesson 2.3 Near Doubles<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\nLook at these addition problems.<br \/>\n3 + 3 2 + 2 4 + 5 3 + 4 2 + 3 4 + 4<br \/>\nHow are they alike? How are they different? Sort them into two groups and write them in the buckets.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2260\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.14.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.14\" width=\"652\" height=\"402\" \/><\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Use a doubles fact to find each near doubles fact.<\/p>\n<p>Question 3.<br \/>\n3 + 4 = ?<br \/>\n__ +__ = ____<br \/>\nSo, ___+ ___ = ____<br \/>\nAnswer:<br \/>\n3 + 3 = 6<br \/>\nSo, 3 + 4 = 7<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n3 and 4 are the addends<br \/>\n3 is less than 4. So, we take 3 and double it<br \/>\n3 + 3 = 6<br \/>\n3 + 4 = 7<br \/>\n7 is 6 plus 1 more.<\/p>\n<p>Question 4.<br \/>\n3 + 5 = ?<br \/>\n___ + ___ = ___<br \/>\nSo, ___ +___= ____<br \/>\nAnswer:<br \/>\n3 + 3 = 6<br \/>\nSo, 3 + 5 = 8<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n3 and 5 are the addends<br \/>\n3 is less than 5. So, we take 3 and double it<br \/>\n3 + 3 = 6<br \/>\n3 + 5 = 8<br \/>\n8 is 6 plus 2 more.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2261\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.15.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.15\" width=\"69\" height=\"99\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5073\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-5\" width=\"653\" height=\"561\" \/><br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n4 and 5 are the addends<br \/>\n4 is less than 5. So, we take 4 and double it<br \/>\n4 +4 = 8<br \/>\n4 + 5 = 9<br \/>\n9 is 8 plus 1 more.<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2262\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.16.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.16\" width=\"69\" height=\"100\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5074\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-6\" width=\"678\" height=\"491\" \/><br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n2 and 4 are the addends<br \/>\n2 is less than 4. So, we take 2 and double it<br \/>\n2 + 2 = 4<br \/>\n2 + 4 = 6<br \/>\n6 is 4 plus 2 more.<\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2263\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.17.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.17\" width=\"62\" height=\"101\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5076\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-7.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.3-Near-Doubles-Guided-Practice-Question-7\" width=\"712\" height=\"563\" \/><\/p>\n<p>Explanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n2 and 1 are the addends<br \/>\n1 is less than 2. So, we take 1 and double it<br \/>\n1 + 1 = 2<br \/>\n1 + 2 = 3<br \/>\n3 is 2 plus 1 more.<\/p>\n<p>Question 8.<br \/>\n3 + 2 = ___<br \/>\nAnswer:<br \/>\n3 + 2 = 5<br \/>\n2 + 2 = 4<br \/>\nSo, 3 + 2 = 5<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n3 and 2 are the addends<br \/>\n2 is less than 3. So, we take 2 and double it<br \/>\n2 + 2 = 4<br \/>\n3 + 2 = 5<br \/>\n5 is 4 plus 1 more.<\/p>\n<p>Question 9.<br \/>\n1 + 3 = ___<br \/>\nAnswer:<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2264\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.18.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.18\" width=\"228\" height=\"244\" \/><br \/>\n1 + 3 = 4<br \/>\n1 + 1 = 2<br \/>\nSo, 1 + 3 = 4<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n1 and 3 are the addends<br \/>\n1 is less than 3. So, we take 1 and double it<br \/>\n1 + 1 = 2<br \/>\n1 + 3 = 4<br \/>\n4 is 2 plus 2 more.<\/p>\n<p><strong>Number Sense<\/strong><br \/>\nWrite the missing numbers.<\/p>\n<p>Question 10.<br \/>\nIf 2 + __ = 4, then 2 + ___ = 5.<br \/>\nAnswer:<br \/>\nIf 2 + _2_ = 4, then 2 + _3__ = 5.<br \/>\n4 &#8211; 2 = 2<br \/>\n5 &#8211; 2 = 3<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n2 and 3 are the addends<br \/>\n2 is less than 3. So, we take 2 and double it<br \/>\n2 + 2 = 4<br \/>\n2 + 3 = 5<br \/>\n5 is 4 plus 1 more.<\/p>\n<p>Question 11.<br \/>\nIf 4 + ___ = 8, then 4+ __ = 9.<br \/>\nAnswer:<br \/>\nIf 4 + _4__ = 8, then 4+ _5_ = 9.<br \/>\n8 &#8211; 4 = 4<br \/>\n9 &#8211; 4 = 5.<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n4 and 5 are the addends<br \/>\n4 is less than 5. So, we take 4 and double it<br \/>\n4 + 4 = 8<br \/>\n4 + 5 = 9<br \/>\n9 is 8 plus 1 more.<\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Solve each problem.<\/p>\n<p>Question 12.<br \/>\n<strong>Reasoning<\/strong><br \/>\nOmar eats 2 pears. Jane eats 2 pears and then 2 more. How many pears do Omar and Jane eat in all?<br \/>\n___ pears in all<br \/>\nAnswer:<br \/>\nNumber of pears Omar eats = 2<br \/>\nNumber of pears Jane eats = 2<br \/>\nNumber of more pears Jane eats = 2<br \/>\nTotal number of pears Jane eats = 2 + 2 = 4 pears.<br \/>\nTotal number of pears both Omar and Jane eats = 2 + 4 = 6.<\/p>\n<p>Question 13.<br \/>\n<strong>Reasoning<\/strong><br \/>\nSam finds 3 shells. Jack finds 4 shells. How many shells do they find in all?<br \/>\n___ shells in all<br \/>\nAnswer:<br \/>\nNumber of shells Sam finds = 3<br \/>\nNumber of shells Jack finds = 4<br \/>\nTotal number of shells both Sam and Jack find = 3 + 4 = 7.<\/p>\n<p>Question 14.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nUse a near doubles fact. Write a story that uses that fact. You can use pictures, words, and numbers.<br \/>\nAnswer:<br \/>\nWhile having tea. Jack ate 3 biscuits and Sam ate 3 biscuits first and then he took 2 more. how many biscuits did they both have in all?<br \/>\nAnswer:<br \/>\nNumber of biscuits Jack ate = 3<br \/>\nNumber of biscuits Sam ate = 3<br \/>\nNumber of more biscuits Sam ate = 2<br \/>\nTotal number of biscuits Sam ate = 3 + 2 = 5<br \/>\nTotal n umber of biscuits both Jack and Sam ate = 5 + 3 = 8.<\/p>\n<p>Question 15.<br \/>\nAssessment Practice<br \/>\nAdd 4 + 3<br \/>\nA. 10<br \/>\nB. 9<br \/>\nC. 8<br \/>\nD. 7<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2265\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.19.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.19\" width=\"234\" height=\"242\" \/><br \/>\nAnswer:<br \/>\nD. 7 is the answer.<br \/>\n4 + 3 = 7<br \/>\n3 + 3 = 6<br \/>\nSo, 4 + 3 = 7<br \/>\n7 is 6 plus 1 more.<br \/>\nExplanation:<br \/>\nTo find the answer using doubles we take two addends and double the smaller addend<br \/>\n4 and 3 are the addends<br \/>\n3 is less than 4. So, we take 3 and double it<br \/>\n3 + 3 = 6<br \/>\n4 + 3 = 7<br \/>\n7 is 6 plus 1 more.<\/p>\n<h3>Lesson 2.4 Facts with 5 on a Ten-Frame<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\nTake a small handful of counters. Toss them onto the page. Place them on the ten-frame. Write an addition equation to match the red and yellow counters. Tell how a ten-frame helps you add.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2266\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.20.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.20\" width=\"581\" height=\"483\" \/>3d<\/p>\n<p><strong><img loading=\"lazy\" class=\"alignnone size-full wp-image-5083\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Solve-Share\" width=\"712\" height=\"563\" \/><br \/>\nVisual Learning Bridge<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2267\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-7.21.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 7.21\" width=\"984\" height=\"332\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nHow does a ten-frame help you add 5 + 4?<\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nLook at the ten-frames. Practice Write an addition fact with 5.<br \/>\nThen write an addition fact for 10.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2268\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.1.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.1\" width=\"266\" height=\"214\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5085\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Guided-Practice- Question-1\" width=\"558\" height=\"544\" \/><br \/>\nExplanation:<br \/>\nGiven a ten frame with 7 counters. Counting the counters with a addition factor of 5.<br \/>\nSo, 7 is represented as 5 + 2 = 7.<br \/>\nNow to fill the ten frame we need to add\u00a0 3 more counters to 7.<br \/>\n7 + 3 = 10.<br \/>\nThese 3 counters are represented with red counter.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2269\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.2.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.2\" width=\"263\" height=\"207\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5106\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Guided-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Guided-Practice- Question-2\" width=\"543\" height=\"390\" \/><br \/>\nExplanation:<br \/>\nGiven a ten frame with 6 counters. Counting the counters with a addition fact with 5.<br \/>\nSo, 6 is represented as 5 + 1 = 6.<br \/>\nNow to fill the ten frame we need to add\u00a0 4 more counters to 6.<br \/>\n6 + 4 = 10.<br \/>\nThese 4 counters are represented with red counter.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Look at the ten-frames. Write an addition fact with 5. Then write an addition fact for 10.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2270\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.3.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.3\" width=\"228\" height=\"220\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5107\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice- Question-3\" width=\"543\" height=\"390\" \/><br \/>\nExplanation:<br \/>\nGiven a ten frame with 6 counters. Counting the counters with a addition fact with 5.<br \/>\nSo, 8 is represented as 5 + 3 = 8.<br \/>\nNow to fill the ten frame we need to add\u00a0 2 more counters to 8.<br \/>\n8 + 2 = 10.<br \/>\nThese 2 counters are represented with red counter.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2271\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.4.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.4\" width=\"226\" height=\"215\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5109\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice- Question-4\" width=\"543\" height=\"390\" \/><br \/>\nExplanation:<br \/>\nGiven a ten frame with 6 counters. Counting the counters with a addition fact with 5.<br \/>\nSo, 5 is represented as 5 + 0 = 5.<br \/>\nNow to fill the ten frame we need to add\u00a0 5 more counters to 5.<br \/>\n5 + 5 = 10.<br \/>\nThese 5 counters are represented with red counter.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2272\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.5.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.5\" width=\"225\" height=\"214\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5111\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Independent-Practice- Question-5\" width=\"543\" height=\"390\" \/><br \/>\nExplanation:<br \/>\nGiven a ten frame with 6 counters. Counting the counters with a addition fact with 5.<br \/>\nSo, 9 is represented as 5 + 4 = 9.<br \/>\nNow to fill the ten frame we need to add\u00a0 1 more counters to 9.<br \/>\n9 + 1\u00a0 = 10.<br \/>\nThese 1 counters are represented with red counter.<\/p>\n<p>Question 6.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nUse 2 colors to draw counters in the ten-frames. Match the addition equations. Then write the missing numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2273\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.6.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.6\" width=\"938\" height=\"333\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5113\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Higher-Order-Thinking-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Higher-Order-Thinking- Question-6\" width=\"945\" height=\"374\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Solve each problem below.<\/p>\n<p>Question 7.<br \/>\n<strong>Model<\/strong><br \/>\nA team has 5 balls. The coach brings 3 more balls. How many balls does the team have now? You can use the ten-frame to help.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2274\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.7.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.7\" width=\"256\" height=\"108\" \/><br \/>\n___ balls<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5116\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving-Question-7.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving- Question-7\" width=\"929\" height=\"430\" \/><\/p>\n<p>Question 8.<br \/>\n<strong>Model<\/strong><br \/>\nKami reads 5 books. Sue reads 4 books. How many books did the girls read in all?<br \/>\nYou can use the ten-frame to help.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2275\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.8.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.8\" width=\"257\" height=\"117\" \/><br \/>\n___ books<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5118\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving- Question-8\" width=\"929\" height=\"430\" \/><\/p>\n<p>Question 9.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nWrite a story with an addition fact for 10. Then write an equation for your story.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2276\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.9.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.9\" width=\"419\" height=\"240\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5119\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.4-Facts-with-5-on-a-Ten-Frame-Problem-Solving- Question-9\" width=\"729\" height=\"537\" \/><\/p>\n<p>Question 10.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nWhich sums equal 10? Choose two that apply.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2277\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.10.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.10\" width=\"199\" height=\"161\" \/><br \/>\nAnswer:<br \/>\n5 + 5 = 10<br \/>\n7 + 3 = 10.<br \/>\nThese two equations have sum equal to 10.<br \/>\n6 + 3 = 9.<br \/>\n4 + 7 = 11.<\/p>\n<h3>Lesson 2.5 Add in Any Order<\/h3>\n<p>Write an addition equation for the green and yellow cubes in each cube tower. How are the addition equations the same? How are they different?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2278\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.11.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.11\" width=\"535\" height=\"370\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5265\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order\" width=\"646\" height=\"701\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2279\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.12.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.12\" width=\"985\" height=\"327\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nHow can you use cubes to show that 5 + 3 is the same as 3 + 5?<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5266\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order-Convince-Me.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order-Convince-Me!\" width=\"635\" height=\"541\" \/><\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nColor to change the order of the addends. Then write the addition equations.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2280\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.13.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.13\" width=\"224\" height=\"281\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5285\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order- Guided-Practice-Question-1\" width=\"678\" height=\"410\" \/><\/p>\n<p>Explanation:<br \/>\nGiven a 7 cube tower.<br \/>\nAn addition equation 3 + 4<br \/>\n3 and 4 are addend that make 7.<br \/>\nChanging the addends we get the same sum of 7.<br \/>\nAn addition equation of 4 + 3 = 7<br \/>\nwhere 3 cubes are red color<br \/>\n4 cubes are blue color.<br \/>\n4 + 3 = 7.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2281\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.14.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.14\" width=\"247\" height=\"282\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5286\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order-Guided-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order- Guided-Practice-Question-2\" width=\"678\" height=\"410\" \/><\/p>\n<p>Explanation:<br \/>\nGiven a 5 cube tower.<br \/>\nTo make 5 we have add two addend to make it 5<br \/>\n2 and 3 are one of the\u00a0 addend that make 5.<br \/>\nAn addition equation of 2 + 3 = 5<br \/>\nwhere 2 cubes are Green color<br \/>\n3 cubes are Yellow color.<br \/>\n2 + 3 = 5.<br \/>\nChanging the order of addends gives the same sum 5.<br \/>\n3 + 2 = 5.<br \/>\n3 cubes are Yellow color.<br \/>\n2 cubes are Green color.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Write the sum. Then change the order of the addends. Write the new addition equation.<\/p>\n<p>Question 3.<br \/>\n2 + 3 = ____<br \/>\n___ + ___ = ___<\/p>\n<p>Answer:<br \/>\n2 + 3 = 5<br \/>\nChanging the order of addends<br \/>\n3 + 2 = 5.<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n2 + 3<br \/>\nHere 2 and 3 are the addends. To find Sum of these two addends we add them<br \/>\n2 + 3 = 5.<br \/>\nsum = 5<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n3 + 2<br \/>\nOn adding these two addends we get the sum<br \/>\n3 + 2 = 5.<br \/>\nSum = 5<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p>Question 4.<br \/>\n1 + 6 = ____<br \/>\n___ + ___ = ___<br \/>\nAnswer:<br \/>\n1 + 6 = 7<br \/>\n6 + 1 = 7<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n1 + 6<br \/>\nHere 1 and 6 are the addends. To find Sum of these two addends we add them<br \/>\n1 + 6 = 7<br \/>\nsum = 7<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n6 + 1<br \/>\nOn adding these two addends we get the sum<br \/>\n6 + 1 = 7<br \/>\nSum = 7<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p>Question 5.<br \/>\n____ = 3 + 6<br \/>\n___ + ___ = ___<br \/>\nAnswer:<br \/>\n9 = 3 + 6<br \/>\n6 + 3 = 9<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n3 + 6<br \/>\nHere 3 and 6 are the addends. To find Sum of these two addends we add them<br \/>\n3 + 6 = 9<br \/>\nsum = 9<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n6 + 3<br \/>\nOn adding these two addends we get the sum<br \/>\n6 + 3 = 9<br \/>\nSum = 9<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p>Question 6.<br \/>\n5 + 2 = ___<br \/>\n___ + ___ = ___<br \/>\nAnswer:<br \/>\n5 + 2 = 7<br \/>\nChanging the order of addends<br \/>\n2 + 5 = 7<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n5 + 2 = 7<br \/>\nHere 5 and 2 are the addends. To find Sum of these two addends we add them<br \/>\n5 + 2 = 7<br \/>\nsum = 7<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n2 + 5<br \/>\nOn adding these two addends we get the sum<br \/>\n2 + 5 = 7<br \/>\nSum = 7<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p>Question 7.<br \/>\n4 + 5 = ___<br \/>\n___ + ___ = ___<br \/>\nAnswer:<br \/>\n4 + 5 = 9<br \/>\nChanging the order of addends<br \/>\n5 + 4 = 9<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n4 + 5<br \/>\nHere 4 and 5 are the addends. To find Sum of these two addends we add them<br \/>\n4 + 5 = 9<br \/>\nsum = 9<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n5 + 4<br \/>\nOn adding these two addends we get the sum<br \/>\n5 + 4 = 9<br \/>\nSum = 9<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p>Question 8.<br \/>\n6 + 2 = ___<br \/>\n___ + ___ = ___<br \/>\nAnswer:<br \/>\n6 + 2 = 8<br \/>\nChanging the order of addends<br \/>\n2 + 6 = 8<br \/>\nExplanation:<br \/>\nGiven an addition equation<br \/>\n6 + 2<br \/>\nHere 2 and 6 are the addends. To find Sum of these two addends we add them<br \/>\n6 + 2 = 8<br \/>\nsum =8<br \/>\nOn changing the order of these addends we get a new equation<br \/>\n2 + 6<br \/>\nOn adding these two addends we get the sum<br \/>\n2 + 6 = 8<br \/>\nSum = 8<br \/>\nEven after changing the order of addends we get the same Sum.<\/p>\n<p><strong>Number Sense<\/strong><br \/>\nUse the numbers on the cards to write two addition equations.<\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2282\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.15.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.15\" width=\"271\" height=\"178\" \/><br \/>\nAnswer:<br \/>\n3 + 5 = 8<br \/>\n5 + 3 = 8<br \/>\nExplanation:<br \/>\nGiven 3 number cards. An addition equation have 2 addends and a sum<br \/>\nthe card numbers are 3, 5 , 8<br \/>\nOn adding two numbers we get the third number. So, we add the two smaller numbers and get the greater number as sum.<br \/>\n3 + 5 = 8.<br \/>\n5 + 3 = 8.<\/p>\n<p>Question 10.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2283\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.16.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.16\" width=\"290\" height=\"180\" \/><br \/>\nAnswer:<br \/>\n4 + 2 = 6<br \/>\n2 + 4 = 6<br \/>\nExplanation:<br \/>\nGiven 3 number cards. An addition equation have 2 addends and a sum<br \/>\nthe card numbers are 4, 6, 2<br \/>\nOn adding two numbers we get the third number. So, we add the two smaller numbers and get the greater number as sum.<br \/>\n4 + 2 = 6<br \/>\n2 + 4 = 6.<\/p>\n<p><strong>Problem Solving<\/strong><br \/>\nSolve each problem below.<\/p>\n<p>Question 11.<br \/>\n<strong>Model<\/strong><br \/>\nLiza and Anna collect 6 cans. They collect 4 more cans. How many cans do they collect in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2284\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.17.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.17\" width=\"460\" height=\"239\" \/><br \/>\nDraw a picture. Then write two different addition equations.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5422\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order-Problem-Solving-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order- Problem-Solving-Question-11\" width=\"809\" height=\"523\" \/><\/p>\n<p>Question 12.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nDraw a picture of 5 birds. Make some blue. Make the rest red.<br \/>\nWrite two addition equations to tell about the picture.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5423\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.5-Add-in-Any-Order-Problem-Solving-Question-12.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10- Lesson-2.5-Add-in-Any-Order- Problem-Solving-Question-12\" width=\"548\" height=\"467\" \/><\/p>\n<p>Question 13.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nLook at the two addition equations. Which is the missing addend?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2285\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.18.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.18\" width=\"445\" height=\"361\" \/><br \/>\nAnswer:<br \/>\nGiven<br \/>\n9 = ? + 2<br \/>\nand<br \/>\n9 = 2 + ?<br \/>\nHere in both the equations<br \/>\nSum = 9<br \/>\none addend is given as 2<br \/>\nTo find the second addend. we subtract the sum &#8211; first addend<br \/>\n9 &#8211; 2 = 7.<br \/>\nSo, the answer is B) 7.<br \/>\nThe equations are<br \/>\n9 = 7 + 2<br \/>\n9 = 2 + 7.<\/p>\n<h3>Lesson 2.6 Count Back to Subtract<\/h3>\n<p><strong>Solve &amp; Share<\/strong><\/p>\n<p>There are 5 people on a bus. It stops and 2 people get off. Show how many people are still on the bus. Then write the number.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2286\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.19.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.19\" width=\"815\" height=\"505\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2287\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.20.png\" alt=\"Envision Math Common Core 1st Grade Answers Topic 2 Fluently Add and Subtract Within 10 8.20\" width=\"990\" height=\"317\" \/><\/p>\n<p>Answer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5473\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Solve-&amp;-Share\" width=\"877\" height=\"537\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nWrite subtraction equations to show counting back by 1, by 2, and by 3.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5478\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Solve-Share-convine-me.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Solve-&amp;-Share-convine-me\" width=\"877\" height=\"537\" \/><\/p>\n<p><strong>Guided Practice<\/strong><\/p>\n<p>Count back to complete each Practice subtraction fact.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2288\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.21.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.21\" width=\"661\" height=\"71\" \/><br \/>\nAnswer:<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2289\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.22.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.22\" width=\"167\" height=\"132\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5479\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-1\" width=\"656\" height=\"512\" \/><br \/>\nExplanation:<br \/>\nGiven 2 equation<br \/>\n4 &#8211; 1 = 3 and 4 &#8211; 0 = 4<br \/>\nIn the first equation 1 is subtracted from 4 and leaves the difference 3<br \/>\nwhereas in the second equation 0 is subtracted from 4 leaves the difference 4.<br \/>\nwhen subtracting 0 from any number gives the difference the number itself.<br \/>\nUsing number line to represent these equations as shown in the above image.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2290\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.23.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.23\" width=\"169\" height=\"134\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5483\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-2\" width=\"656\" height=\"512\" \/><br \/>\nExplanation:<br \/>\nGiven 2 equation<br \/>\n6 &#8211; 0 = 6 and 6 &#8211; 2 = 4<br \/>\nIn the first equation 0 is subtracted from 6 and leaves the difference 6<br \/>\nwhen subtracting 0 from any number gives the difference the number itself.<br \/>\nIn the second equation 2 is subtracted from 6 leaves the difference 4.<br \/>\nUsing number line to represent these equations as shown in the above image.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2291\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.24.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.24\" width=\"172\" height=\"132\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5484\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-3\" width=\"656\" height=\"512\" \/><br \/>\nExplanation:<br \/>\nGiven 2 equation<br \/>\n9 &#8211; 5 = 4<br \/>\n9 &#8211; 3 = 6<br \/>\nUsing number line to represent these equations as shown in the above image<br \/>\nIn the first equation 5 is subtracted from 9 and gets the difference 4.<br \/>\nFrom 9 we count 5 times back and get the answer 4.<br \/>\nIn the second equation 3 is subtracted from 9 gets the difference 6.<br \/>\nFrom 9 we count 3 times back ward and get the answer 6.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Complete each subtraction fact. + Practice Count back on the number line to help you.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2292\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.25.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.25\" width=\"825\" height=\"69\" \/><\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2293\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.26.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.26\" width=\"96\" height=\"135\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5485\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-4\" width=\"647\" height=\"351\" \/><\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2294\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.27.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.27\" width=\"85\" height=\"132\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5486\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-5\" width=\"647\" height=\"351\" \/><\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2295\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.28.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.28\" width=\"82\" height=\"128\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5488\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-6\" width=\"647\" height=\"351\" \/><\/p>\n<p>Question 7.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2296\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.29.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.29\" width=\"83\" height=\"128\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5489\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-7.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-7\" width=\"629\" height=\"290\" \/><\/p>\n<p>Question 8.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2297\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.30.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.30\" width=\"85\" height=\"136\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5490\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-8\" width=\"629\" height=\"290\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2298\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.31.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.31\" width=\"520\" height=\"115\" \/><\/p>\n<p>Question 9.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nAmy and Ryan buy pencils. Amy buys 10 pencils. Ryan buys 8 pencils. How many fewer pencils does Ryan buy?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2299\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.32.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.32\" width=\"262\" height=\"106\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5495\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Guided-Practice-Question-9\" width=\"738\" height=\"551\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Solve each problem below. Write a subtraction equation to match the problem.<\/p>\n<p>Question 10.<br \/>\n<strong>Reasoning<\/strong><br \/>\nManny picks a number. His number is 4 less than 8. What is Manny&#8217;s number?<br \/>\n___ &#8211; ___ = ___<br \/>\nManny&#8217;s number is ___.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5497\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-10.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-10\" width=\"727\" height=\"413\" \/><\/p>\n<p>Question 11.<br \/>\n<strong>Reasoning<\/strong><br \/>\nBeth is thinking of a number. Her number is o less than 10. What is Beth&#8217;s number?<br \/>\nBeth&#8217;s number is ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5499\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-11\" width=\"723\" height=\"330\" \/><\/p>\n<p>Question 12.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nComplete the subtraction equation. Then write a story to match the equation.<br \/>\n5 &#8211; 1 = ___<br \/>\nAnswer:<br \/>\n5 &#8211; 1 = 4.<br \/>\nStory<br \/>\nAbby thinking of a number. Her number is 1 less than 5. What is Abby&#8217;s number.<\/p>\n<p>Question 13.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nSelect the difference.<br \/>\n10 &#8211; 3 = ___<br \/>\nA. 7<br \/>\nB. 5<br \/>\nC. 3<br \/>\nD. 1<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2300\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.33.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.33\" width=\"352\" height=\"321\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5501\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-13.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.6-Count-Back-to-Subtract-Problem-Solving-Question-13\" width=\"723\" height=\"330\" \/><\/p>\n<h3>Lesson 2.7 Think Addition to Subtract<\/h3>\n<p><strong>Solve &amp; Share<\/strong><\/p>\n<p>Jenna has 6 balls.<br \/>\nThen 4 balls blow away. How many balls does she have left?<br \/>\nJenna says she can solve 6-4 by adding to 4. What do you think Jenna did? Show your work.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2301\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.34.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.34\" width=\"707\" height=\"325\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-5503\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Solve-&amp;-Share\" width=\"755\" height=\"507\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2302\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.35.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.35\" width=\"979\" height=\"298\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nHow can an addition fact help you solve 7 &#8211; 6?<br \/>\nAnswer:<br \/>\n7 &#8211; 6 = ?<br \/>\n6 + 1 = 7<br \/>\n7 &#8211; 6 = 1.<\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nThink addition to help you subtract. Draw the missing part. Then write the missing numbers.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2303\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.36.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.36\" width=\"206\" height=\"272\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5504\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Guided-Practice- Question-1\" width=\"273\" height=\"302\" \/><br \/>\nExplanation:<br \/>\nUsing the tape diagram to solve the problem.<br \/>\n5 &#8211; 4 is can also be written as<br \/>\n4 less than 5<br \/>\n5 &#8211; 4 = ?<br \/>\nUsing addition equation to solve the subtraction equation<br \/>\n4 + 1 = 5<br \/>\n5 &#8211; 4 = 1<br \/>\n1 is\u00a0 the missing number.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2304\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.37.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.37\" width=\"215\" height=\"269\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5508\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Guided-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Guided-Practice- Question-2\" width=\"273\" height=\"302\" \/><br \/>\nExplanation:<br \/>\nUsing the tape diagram to solve the problem.<br \/>\n6 &#8211; 5 is can also be written as<br \/>\n5 less than 6<br \/>\n6 &#8211; 5 = ?<br \/>\nUsing addition equation to solve the subtraction equation<br \/>\n5 + 1 = 6<br \/>\n6 &#8211; 5 = 1<br \/>\n1 is\u00a0 the missing number.<\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Think addition to help you subtract. Draw the missing part. Then write the missing numbers.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2305\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.38.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.38\" width=\"240\" height=\"290\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5512\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Independent-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Independent-Practice- Question-3\" width=\"240\" height=\"290\" \/><br \/>\nExplanation:<br \/>\nUsing the tape diagram to solve the problem.<br \/>\n8 &#8211; 6 is can also be written as<br \/>\n6 less than 8<br \/>\n8 &#8211; 6 = ?<br \/>\nUsing addition equation to solve the subtraction equation<br \/>\n6 + 2 = 8<br \/>\n8 &#8211; 6 = 2<br \/>\n2 is\u00a0 the missing number.<\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2306\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-8.39.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 8.39\" width=\"227\" height=\"288\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5513\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Independent-Practice-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Independent-Practice- Question-4\" width=\"320\" height=\"341\" \/><br \/>\nExplanation:<br \/>\nUsing the tape diagram to solve the problem.<br \/>\n7 &#8211; 4 is can also be written as<br \/>\n4 less than 7<br \/>\n7 &#8211; 4 = ?<br \/>\nUsing addition equation to solve the subtraction equation<br \/>\n4 + 3 = 7<br \/>\n7 &#8211; 4 = 3<br \/>\n3 is\u00a0 the missing number.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2307\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.4.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.4\" width=\"230\" height=\"294\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5515\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Independent-Practice-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Independent-Practice- Question-5\" width=\"320\" height=\"341\" \/><br \/>\nExplanation:<br \/>\nUsing the tape diagram to solve the problem.<br \/>\n4 &#8211; 3 is can also be written as<br \/>\n3 less than 4<br \/>\n4 &#8211; 3 = ?<br \/>\nUsing addition equation to solve the subtraction equation<br \/>\n3 + 1 = 4<br \/>\n4 &#8211; 3 = 1<br \/>\n1 is\u00a0 the missing number.<\/p>\n<p>Question 6.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nDraw the shape to complete the equation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2308\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.11.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.11\" width=\"349\" height=\"168\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2309\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.12.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.12\" width=\"370\" height=\"256\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5517\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Higher-Order-Thinking-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Higher-Order-Thinking- Question-6\" width=\"750\" height=\"316\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Write an addition equation and a subtraction equation to solve.<\/p>\n<p>Question 7.<br \/>\n<strong>Use Tools<\/strong><br \/>\nPam needs 8 tickets for a ride. She has 2 tickets.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2310\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.13.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.13\" width=\"335\" height=\"279\" \/><br \/>\nHow many tickets does Pam still need?<br \/>\n__ + __ = ___<br \/>\n___ &#8211; __ = ___<br \/>\n___ tickets<br \/>\nAnswer:<br \/>\nTotal number of tickets Pam need = 8<br \/>\nNumber of tickets she have = 2<br \/>\nNumber of tickets she need more = 8 &#8211; 2<br \/>\n2 + 6 = 8<br \/>\nSo, 8 &#8211; 2 = 6.<br \/>\nPam need 6 tickets.<\/p>\n<p>Question 8.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nA box holds 6 crayons. 4 crayons are inside the box. Kathy uses addition to find how many crayons are missing. Is Kathy correct? Explain.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2311\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.14.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.14\" width=\"428\" height=\"263\" \/><br \/>\nAnswer:<br \/>\nKathy is wrong. She should use subtraction to find the number of crayons missing.<br \/>\n6 &#8211; 4 = 2.<br \/>\n2 crayons are missing.<br \/>\nUsing addition<br \/>\n6 + 4 = 10 gives us the sum 10.<br \/>\nAs the box can only hold 6 crayons. 10 is 4 more than 6.<br \/>\nwhich is why we use subtraction to find the missing crayons.<\/p>\n<p>Question 9.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\nWhich addition facts can help you solve 9 &#8211; 2? Choose two that apply.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2312\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-3.15.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 3.15\" width=\"394\" height=\"195\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5521\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think-\u2013Addition-to-Subtract-Problem-Solving-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.7-Think \u2013Addition-to-Subtract-Problem-Solving- Question-9\" width=\"628\" height=\"316\" \/><br \/>\nExplanation:<br \/>\nALL the equation gives the sum 9.<br \/>\nBut in the tape diagram there are 2 counters. So, one of the addend is 2.<br \/>\nThe equation with one addend 2 are selected.<br \/>\n7 + 2 = 9<br \/>\n2 + 7 = 9.<\/p>\n<h3>Lesson 2.8 Solve Word Problems with Facts to 10<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\n6 fish swim by. Some more fish join them. Now there are 10 fish. How many fish joined the group?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2313\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.1.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.1\" width=\"738\" height=\"388\" \/><br \/>\nDraw a picture.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5659\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Solve-&amp;-Share\" width=\"881\" height=\"537\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2314\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.2.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.2\" width=\"970\" height=\"280\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\n7 cubes are on a table. Some cubes fall off. Now 3 cubes are on the table. How many cubes fell off the table?<\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nDraw a picture. Then write an equation and solve.<\/p>\n<p>Question 1.<br \/>\nMaria sees 3 blue birds.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2315\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.3.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.3\" width=\"258\" height=\"104\" \/><br \/>\nShe sees some red birds. Maria sees 9 birds in all. How many red birds did Maria see?<br \/>\n___ red birds<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2316\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.4.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.4\" width=\"340\" height=\"332\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5692\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Guided-Practice-Question-1\" width=\"878\" height=\"578\" \/><\/p>\n<p><strong>Independent Practice<\/strong><\/p>\n<p>Draw a picture. Then write an equation and solve.<\/p>\n<p>Question 2.<br \/>\nJamal picks 7 berries. Then Ed picks more berries. They pick 10 berries in all. How many berries did Ed pick?<br \/>\n___ berries<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2317\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.5.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.5\" width=\"413\" height=\"173\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5695\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-2\" width=\"878\" height=\"526\" \/><\/p>\n<p>Question 3.<br \/>\nVicky has 8 flowers in her garden. She picks some flowers. Now there are 4 flowers left. How many flowers did Vicky pick?<br \/>\n___ flowers<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2318\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.6.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.6\" width=\"409\" height=\"175\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5696\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-3\" width=\"878\" height=\"530\" \/><\/p>\n<p>Question 4.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nWrite a math story to match the picture. Then write an equation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2319\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-4.7.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 4.7\" width=\"347\" height=\"288\" \/><br \/>\nAnswer:<br \/>\nThere are 3 ducks in a pond. Their are some fishes. Now there are 7 animals in the ponds. How many fishes are in the pond?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5697\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Independent-Practice-Question-4\" width=\"878\" height=\"575\" \/><\/p>\n<p><strong>Problem Solving<\/strong><\/p>\n<p>Solve each problem. Draw pictures and write equations to help.<\/p>\n<p>Question 5.<br \/>\n<strong>Make Sense<\/strong><br \/>\nCharlie draws 9 stars. Joey draws 4 stars. How many fewer stars did Joey draw than Charlie?<br \/>\n__ fewer stars<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2320\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.1.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.1\" width=\"377\" height=\"133\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5699\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-5\" width=\"878\" height=\"588\" \/><\/p>\n<p>Question 6.<br \/>\n<strong>Make Sense<\/strong><br \/>\nBrian finds 3 rocks on Monday. He finds 7 rocks on Friday.<br \/>\nHow many more rocks did Brian find on Friday than on Monday?<br \/>\n___ more rocks<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2321\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.2.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.2\" width=\"379\" height=\"130\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5703\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-6\" width=\"879\" height=\"643\" \/><\/p>\n<p>Question 7.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nWrite a math story and an equation to match the picture.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2322\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.3.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.3\" width=\"199\" height=\"207\" \/><br \/>\nAnswer:<br \/>\nThere are 6 monkeys playing in the forest. 4 monkey are swinging on the tree and 2 monkeys are sitting on ground. Find how many fewer money are sitting on the ground?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2322\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.3.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.3\" width=\"199\" height=\"207\" \/><br \/>\nTotal number of monkeys = 6<br \/>\nNumber of monkeys swinging on the tree = 4<br \/>\nNumber of monkeys siting on the ground = 2<br \/>\nNumber of fewer monkeys sitting on the ground than swinging on the tree = 4 &#8211; 2 = 2.<br \/>\nThere are 2 fewer monkeys sitting on the ground than swinging on the tree.<\/p>\n<p>Question 8.<br \/>\n<strong>Assessment Practice<\/strong><br \/>\n5 ducks are in a row. More ducks join them. Now there are 8 ducks. How many ducks joined them?<br \/>\nA. 8 ducks<br \/>\nB. 5 ducks<br \/>\nC. 4 ducks<br \/>\nD. 3 ducks<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2323\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.4.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.4\" width=\"279\" height=\"197\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5704\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.8-Solve-Word-Problems-with-Facts-to-10-Problem-Solving-Question-8\" width=\"879\" height=\"415\" \/><\/p>\n<h3>Lesson 2.9 Look For and Use Structure<\/h3>\n<p><strong>Solve &amp; Share<\/strong><br \/>\nUse counters and the part-part whole mat to show different ways to make 10. Write the different ways in the table.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2324\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.5.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.5\" width=\"701\" height=\"494\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5706\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Solve-Share.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Solve-&amp;-Share\" width=\"888\" height=\"543\" \/><\/p>\n<p><strong>Visual Learning Bridge<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2325\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.6.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.6\" width=\"981\" height=\"304\" \/><\/p>\n<p><strong>Convince Me!<\/strong><br \/>\nDescribe a pattern in the table that shows how many bears and lions there are.<\/p>\n<p><strong>Guided Practice<\/strong><br \/>\nUse the table and patterns to help you solve the problem.<\/p>\n<p>Question 1.<br \/>\nPatty has 4 dog stickers and 4 cat stickers. She wants to put 6 stickers on a page of her book. Show 3 ways Patty can put stickers on the page.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2326\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.7.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.7\" width=\"287\" height=\"321\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5709\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Guided-Practice-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Guided-Practice-Question-1\" width=\"888\" height=\"581\" \/><\/p>\n<p><strong>Independent Practice<\/strong><br \/>\nUse patterns to help you solve each problem.<\/p>\n<p>Question 2.<br \/>\nMax has 5 markers. He can put them in his desk or in his bag. Complete the table to show all the ways.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2327\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.8.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.8\" width=\"200\" height=\"321\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5713\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Independent-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Independent-Practice-Question-2\" width=\"628\" height=\"657\" \/><\/p>\n<p>Question 3.<br \/>\nMs. Davis fills a box with 10 prizes. She has 7 balls and 7 balloons. Complete the table to show all the ways.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2328\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.9.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.9\" width=\"205\" height=\"333\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5714\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Independent-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Independent-Practice-Question-3\" width=\"608\" height=\"652\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2329\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.10.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.10\" width=\"623\" height=\"127\" \/><\/p>\n<p>Question 4.<br \/>\n<strong>Higher Order Thinking<\/strong><br \/>\nJulie plants 10 flowers. ___ by a tree and __ in a box<br \/>\nShe plants some by a free and some in a box. ___ by a tree and __ in a box<br \/>\nFind 3 ways Julie can plant the flowers. ___ by a tree and __ in a box<br \/>\nAnswer:<br \/>\nJulie plants 10 flowers. _4__ by a tree and\u00a0 _6_ in a box<br \/>\nShe plants some by a free and some in a box. _5__ by a tree and _5_ in a box<br \/>\nFind 3 ways Julie can plant the flowers. _6__ by a tree and _4_ in a box<br \/>\nOther possible ways are<br \/>\nby a tree\u00a0 \u00a0+\u00a0 in a box<br \/>\n0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a010<br \/>\n1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 9<br \/>\n2\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 8<br \/>\n3\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 7<br \/>\n4\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 6<br \/>\n5\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 5<br \/>\n6\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 4<br \/>\n7\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 3<br \/>\n8\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 2<br \/>\n9\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+\u00a0 \u00a0 \u00a0 1<br \/>\n10\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 +\u00a0 \u00a0 \u00a0 0<\/p>\n<p><strong>Problem Solving<\/strong><br \/>\nPerformance Task<\/p>\n<p><strong>Pieces of Fruit<\/strong><br \/>\nEd eats 7 pieces of fruit. He eats strawberries and grapes.<br \/>\nBen and Maria started tables to show all the ways Ed can eat the strawberries and grapes.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2330\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.11.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.11\" width=\"488\" height=\"395\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5717\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Problem-Solving-\u2013Pieces-of-Fruit-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Problem-Solving \u2013Pieces-of-Fruit\" width=\"1190\" height=\"762\" \/><\/p>\n<p>Question 5.<br \/>\n<strong>Model<\/strong><br \/>\nComplete each table. Use cubes or draw a picture to help you.<br \/>\nAnswer:<\/p>\n<p>Question 6.<br \/>\n<strong>Look for Patterns<\/strong><br \/>\nDescribe one pattern in each table.<br \/>\nAnswer:<br \/>\nIn Maria readings<br \/>\nstrawberries Grapes<br \/>\nIn 1st, 2nd reading increase by 5 decrease by 5<br \/>\nIn 2nd and 3rd reading decrease by 3 increase by 3<br \/>\nIn 3rd, 4th,5th readings Increase by 1 decrease by 1<br \/>\nIn 5th and 6th reading decrease by 3 increase by 3<br \/>\nIn 6th , 7 th reading increase by 5 decrease by 5<br \/>\nIn 7th and 8th reading decrease by 7 increase by 7<\/p>\n<p>In Ben case<br \/>\nstrawberries increase by 1 and grapes decrease by 1<\/p>\n<h3>Topic 2 Fluency Practice Activity<\/h3>\n<p>Find a partner. Point to a clue. Read the clue. Look below the clues to find a match. Write the clue letter in the box next to the match. Find a match for every clue.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2331\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.12.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.12\" width=\"819\" height=\"584\" \/><\/p>\n<p>Answer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5718\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Fluency-Practice-Activity.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic-2-Fluency-Practice-Activity\" width=\"1145\" height=\"490\" \/><\/p>\n<h3>Topic 2 Vocabulary Review<\/h3>\n<p><strong>Understand Vocabulary<\/strong><\/p>\n<p>Question 1.<br \/>\nCircle the addition equation that is shown on the number line.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2332\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.14.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.14\" width=\"665\" height=\"176\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5719\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Vocabulary-Review-Understand-Vocabulary-Question-1.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic 2-Vocabulary-Review-Understand-Vocabulary-Question-1\" width=\"617\" height=\"357\" \/><\/p>\n<p>Question 2.<br \/>\nCross out the problems that do NOT show doubles facts.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2333\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.15.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.15\" width=\"84\" height=\"141\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5720\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Vocabulary-Review-Understand-Vocabulary-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic 2-Vocabulary-Review-Understand-Vocabulary-Question-2\" width=\"371\" height=\"253\" \/><\/p>\n<p>Question 3.<br \/>\nCircle the near doubles facts.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2334\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.16.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.16\" width=\"84\" height=\"141\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5721\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Vocabulary-Review-Understand-Vocabulary-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic 2-Vocabulary-Review-Understand-Vocabulary-Question-3\" width=\"592\" height=\"535\" \/><\/p>\n<p>Question 4.<br \/>\nCircle the word that completes the sentence. Sam has 6 pens. Bev has 4 pens. Bev has 2 __ pens than Sam.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2335\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.17.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.17\" width=\"273\" height=\"56\" \/><br \/>\nAnswer:<br \/>\nSam has 6 pens. Bev has 4 pens. Bev has 2 <strong>_fewer_<\/strong> pens than Sam.<br \/>\nEquation<br \/>\n6 &#8211; 4 = 2.<\/p>\n<p><strong>Use Vocabulary in Writing<\/strong><\/p>\n<p>Question 5.<br \/>\nWrite and solve a story problem. Use at least one term from the Word List.<br \/>\nAnswer:<\/p>\n<p><strong>Set A<\/strong><\/p>\n<p>8 peppers are in the pot. You can add 1 more by counting I more.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2336\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.18.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.18\" width=\"182\" height=\"171\" \/><br \/>\n1 more than 8 is 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2337\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.19.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.19\" width=\"224\" height=\"56\" \/><br \/>\nAnswer:<br \/>\n1 more than 8 is<br \/>\n8 + 1 = 9<br \/>\nNumber of pepper in the pot = 8<br \/>\nNumber of more peppers added = 1<br \/>\nTotal number of peppers in all = 8 + 1 = 9.<br \/>\n8 plus 1 more makes 9.<\/p>\n<p>Add 0, 1 and 2 to find the sum. Write the addition fact.<\/p>\n<p>Question 1.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2338\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.20.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.20\" width=\"215\" height=\"171\" \/><br \/>\nAnswer:<br \/>\nNumber on the tomatoes in the bucket = 9<br \/>\nNumber of more tomatoes added = 2<br \/>\nTotal number of tomatoes = 9 + 2 = 11.<br \/>\n9 plus 2 more makes 11.<\/p>\n<p>Question 2.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2339\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.21.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.21\" width=\"206\" height=\"178\" \/><br \/>\nAnswer:<br \/>\nNumber of balls in the bucket = 9<br \/>\nNumber of more balls added = 0<br \/>\nTotal number of balls = 9 + 0 = 9<\/p>\n<p><strong>Set B<\/strong><\/p>\n<p>You can use doubles facts to add.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2340\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.22.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.22\" width=\"253\" height=\"209\" \/><br \/>\nBoth addends are the same. They are doubles.<br \/>\nAnswer:<br \/>\n2 + 2 = 4<br \/>\n3 + 3 = 6<\/p>\n<p>Write an addition equation for each doubles fact.<\/p>\n<p>Question 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2341\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.23.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.23\" width=\"226\" height=\"125\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5725\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Vocabulary-Review-Set-B-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic 2-Vocabulary-Review-Set-B -Question-3\" width=\"326\" height=\"198\" \/><\/p>\n<p>Question 4.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2342\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.24.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.24\" width=\"186\" height=\"71\" \/><br \/>\nHow many coins are there in all?<br \/>\n__ + ___= ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5728\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Vocabulary-Review-Set-B-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure- Topic 2-Vocabulary-Review-Set-B -Question-4\" width=\"478\" height=\"212\" \/><\/p>\n<p><strong>Set C<\/strong><\/p>\n<p>You can use doubles facts to add near doubles.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2343\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.25.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.25\" width=\"397\" height=\"154\" \/><\/p>\n<p>Find each sum.<\/p>\n<p>Question 5.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2344\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.26.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.26\" width=\"295\" height=\"186\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5729\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-C-Question-5.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-C -Question-5\" width=\"352\" height=\"261\" \/><\/p>\n<p><strong>Set D<\/strong><\/p>\n<p>You can use a ten-frame to learn facts with 5.<br \/>\nLook at the addition equation. Draw counters in the frame.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2345\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.27.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.27\" width=\"370\" height=\"172\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5730\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-D-.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-D\" width=\"427\" height=\"388\" \/><\/p>\n<p>Draw counters and complete the addition problems.<\/p>\n<p>Question 6.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2346\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.28.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.28\" width=\"453\" height=\"171\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5731\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-D-Question-6.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-D-Question-6\" width=\"459\" height=\"319\" \/><\/p>\n<p><strong>Set E<\/strong><\/p>\n<p>Find the sum.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2347\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.29.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.29\" width=\"156\" height=\"59\" \/><br \/>\nYou can change the order of the addends.<br \/>\nWrite the new addition equation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2348\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.30.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.30\" width=\"216\" height=\"71\" \/><br \/>\nThe sum is the same.<br \/>\nAnswer:<br \/>\n2 + 5 = 7<br \/>\n5 + 2 = 7<br \/>\nboth the cases the sum is same 7.<\/p>\n<p>Write the sum. Then change the order of the addends and write a new addition equation.<\/p>\n<p>Question 7.<br \/>\n1 + 4 =___<br \/>\n__ + __ = ___<br \/>\nAnswer:<br \/>\n1 + 4 = 5<br \/>\n4 + 1 = 5<br \/>\nSum\u00a0 = 5 in both the cases.<br \/>\nThe order of addends is changed.<\/p>\n<p>Question 8.<br \/>\n6 + 3 = ___<br \/>\n__ + __ =___<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2349\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.31.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.31\" width=\"283\" height=\"281\" \/><br \/>\nAnswer:<br \/>\n6 + 3 = 9<br \/>\n6 and 3 are the addends and Sum is 9<br \/>\nAfter changing the order of addends<br \/>\n3 + 6 = 9<br \/>\nWe get the same Sum = 9.<\/p>\n<p><strong>Set F<\/strong><\/p>\n<p>You can subtract by counting back. 2 less than 9 is <u>7<\/u><br \/>\nWrite the subtraction fact.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2350\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.32.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.32\" width=\"110\" height=\"192\" \/><br \/>\nAnswer:<\/p>\n<p>Count back to find the difference. Complete each subtraction fact.<\/p>\n<p>Question 9.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2351\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.33.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.33\" width=\"109\" height=\"163\" \/><br \/>\n1 less than 4 is ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5732\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-F-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-F-Question-9\" width=\"792\" height=\"281\" \/><\/p>\n<p>Question 10.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2352\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.34.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.34\" width=\"113\" height=\"165\" \/><br \/>\n0 less than 6 is ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5733\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-F-Question-10.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-F-Question-10\" width=\"792\" height=\"281\" \/><\/p>\n<p><strong>Set G<\/strong><\/p>\n<p>You can think addition to help you subtract.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2353\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.35.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.35\" width=\"384\" height=\"189\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5734\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G\" width=\"484\" height=\"294\" \/><\/p>\n<p>Think addition to help you subtract.<\/p>\n<p>Question 11.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2354\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.36.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.36\" width=\"178\" height=\"184\" \/><br \/>\n4 + __ = __<br \/>\nSo, 6 &#8211; 4 = ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5735\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G-Question-11\" width=\"485\" height=\"455\" \/><\/p>\n<p>Question 12.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2355\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.37.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.37\" width=\"179\" height=\"181\" \/><br \/>\n6 + __ = 7<br \/>\nSo, 7 &#8211; 6 = ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5736\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G-Question-12.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-G-Question-12\" width=\"485\" height=\"455\" \/><\/p>\n<p><strong>Set H<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2356\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.38.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.38\" width=\"316\" height=\"351\" \/><\/p>\n<p>Dani&#8217;s family can care for 3 animals. Dani shows the ways they can care for cats and dogs.<\/p>\n<p>Question 13.<br \/>\nComplete the table below.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2357\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.39.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.39\" width=\"490\" height=\"99\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5737\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-H-Question-13.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-H-Question-13\" width=\"488\" height=\"144\" \/><\/p>\n<p>Question 14.<br \/>\nDescribe a pattern you see in the table.<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5738\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-H-Question-14.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Set-H-Question-14\" width=\"702\" height=\"338\" \/><\/p>\n<h3>Topic 2 Assessment Practice<\/h3>\n<p>Question 1.<br \/>\nMolly has 3 toy cars. She gets 4 more as a gift. How many toy cars does Molly have now?<br \/>\nA. 7<br \/>\nB. 8<br \/>\nC. 9<br \/>\nD. 10<br \/>\nAnswer:<br \/>\nNumber of toy cars Molly has = 3<br \/>\nNumber of more cars she gets as a gift = 4<br \/>\nTotal number of toy cars Molly have now = 3 + 4 = 7.<br \/>\nAnswer is A.<\/p>\n<p>Question 2.<br \/>\nBrad has 5 books. His dad gives him 4 more. How many books does Brad have in all?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2358\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.40.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.40\" width=\"262\" height=\"116\" \/><br \/>\nA. 1<br \/>\nB. 4<br \/>\nC. 5<br \/>\nD. 9<br \/>\nAnswer:<br \/>\nD. 9<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5739\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-2.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-2\" width=\"467\" height=\"260\" \/><\/p>\n<p>Question 3.<br \/>\nSammy earns 7 stars in gym class. He earns 3 stars in music class. How many stars did Sammy earn in all? Explain how you know.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2359\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.41.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.41\" width=\"416\" height=\"218\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5740\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-3\" width=\"734\" height=\"315\" \/><\/p>\n<p>Question 4.<br \/>\nFind 8 &#8211; 2<br \/>\nShow your work.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2360\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.42.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.42\" width=\"402\" height=\"88\" \/><br \/>\n8 &#8211; 2 = ___<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5741\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-4\" width=\"734\" height=\"315\" \/><\/p>\n<p>Question 5.<br \/>\nWrite the doubles fact that will help you find 3 + 4. Find the sum.<br \/>\n__ + __= ___<br \/>\n3 + 4 = ___<br \/>\nAnswer:<br \/>\n3 + 4 = 7<br \/>\nUsing the double fact<br \/>\nTaking the smallest addend from the two addends and doubling it<br \/>\n3 and 4 are the addends.<br \/>\n3 is smallest. Doubling it<br \/>\n3 + 3 = 6<br \/>\nSo, 3 + 4 = 3 + 3 and 1 more<br \/>\n7 = 3 + 3 and 1 more.<\/p>\n<p>Question 6.<br \/>\nYuri is thinking of a number. His number is o less than 9. Write an equation to find his number.<br \/>\n__ &#8211; __ = ___<br \/>\nAnswer:<br \/>\nThe number Yuri thinking = 0 less than 9<br \/>\n0 less than 9 = 9 &#8211; 0 = 9.<br \/>\nThe number Yuri thinking is 9.<\/p>\n<p>Question 7.<br \/>\nA part is missing in the equations and model. Find the missing part.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2361\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.43.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.43\" width=\"205\" height=\"194\" \/><br \/>\n1 + __ = 6<br \/>\n6 &#8211; 1 = ____<br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5742\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-7.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-7\" width=\"493\" height=\"339\" \/><\/p>\n<p>Question 8.<br \/>\nChoose two addition equations that match the picture.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2362\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.45.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.45\" width=\"386\" height=\"357\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5743\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-8.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-8\" width=\"490\" height=\"550\" \/><\/p>\n<p>Question 9.<br \/>\nChoose two addition equations that can help find 9 &#8211; 3.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2363\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.46.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.46\" width=\"191\" height=\"271\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5744\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-9.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-9\" width=\"476\" height=\"488\" \/><\/p>\n<p>Question 10<br \/>\nFind 5 + 4.<br \/>\n5 + 4 = ___<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2364\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.47.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.47\" width=\"275\" height=\"279\" \/><br \/>\nAnswer:<br \/>\n5 + 4 = 9<br \/>\nUsing the double fact<br \/>\ntaking the smallest addend of the two and doubling it<br \/>\n4 + 4 = 8<br \/>\n5 + 4 = 9 = 4 + 4 and 1 more.<\/p>\n<p>Question 11.<br \/>\nPaul has 5 grapes. His friend gives him 3 more. How many grapes does Paul have now?<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2365\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.48.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.48\" width=\"400\" height=\"202\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-5745\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-11.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-11\" width=\"473\" height=\"444\" \/><\/p>\n<p>Question 12.<br \/>\n3 frogs sit on a rock. 3 more join them. How many frogs are there in all? Draw a picture and write an equation.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2366\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.49.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.49\" width=\"420\" height=\"247\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6952\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-12.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-12\" width=\"706\" height=\"511\" \/><\/p>\n<p>Question 13.<br \/>\nWhich is a doubles fact?<br \/>\nA. 4 + 2 = 6<br \/>\nB. 4 + 3 = 7<br \/>\nC. 4 + 4 = 8<br \/>\nD. 4 + 5 = 9<br \/>\nAnswer:<br \/>\nDouble Facts are additions in which a number is added to itself.<br \/>\nIn the above equations only C. 4 + 4 = 8 is the double fact.<br \/>\nC. 4 + 4 = 8 id double fact.<\/p>\n<p>Question 14.<br \/>\nErin is thinking of a number. Her number is 5 less than 10. What doubles fact could you use to find Erin&#8217;s number?<br \/>\n10 &#8211; 5 = <u>?<\/u><br \/>\n__ + __ = ___<br \/>\nAnswer:<br \/>\nThe number Erin is thinking = 5 less than 10<br \/>\nNumber 5 less than 10 = 10 &#8211; 5 = 5<br \/>\nThe double fact used to Find Erin&#8217;s number = 5 + 5 = 10.<br \/>\n10 &#8211; 5 = 5<br \/>\n5 + 5 = 10.<\/p>\n<p>Question 15.<br \/>\nThink addition to help you subtract. Find the missing part. Then write the numbers.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2367\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.50.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.50\" width=\"218\" height=\"298\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6955\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-15.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-15\" width=\"652\" height=\"552\" \/><\/p>\n<p>Question 16.<br \/>\nTina wants to buy 6 beads. She can buy red or blue beads. Complete the table to show all the ways Tina can buy the beads.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2368\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.51.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.51\" width=\"592\" height=\"143\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6957\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-16.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Question-16\" width=\"770\" height=\"557\" \/><\/p>\n<p><strong>Favorite Fruits<\/strong><\/p>\n<p>The first-grade students at Park School took a vote on favorite fruits. They made this chart.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2369\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.52.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.52\" width=\"430\" height=\"457\" \/><\/p>\n<p>Question 1.<br \/>\nHow many fewer students voted for Strawberry than Apple? Draw a picture and write an equation to solve.<br \/>\nAnswer:<br \/>\nNumber of students voted for Apple = 5<br \/>\nNumber of students voted for Strawberry = 2<br \/>\nNumber of fewer students voted for Strawberry than Apple = 5 &#8211; 2 = 3.<br \/>\n3 fewer students voted for Strawberry than Apple.<\/p>\n<p>Question 2.<br \/>\nLaura says that she can use near doubles to find the total number of votes for Banana and Strawberry.<br \/>\nDo you agree?<br \/>\nCircle Yes or No.<br \/>\nShow your work to explain.<br \/>\nAnswer:<br \/>\nNumber of Banana = 6<br \/>\nNumber of Strawberry = 2<br \/>\nTotal number of Banana and Strawberry = 6 + 2 = 8<br \/>\nNo, i don&#8217;t agree to use near doubles because<br \/>\n6 + 2 = 8<br \/>\nTo use the near double we use the smaller addend<br \/>\n2 + 2 = 4<br \/>\n6 + 2 = 8 is 2 + 2 and 4 more<br \/>\n4 more is too long.<\/p>\n<p>Question 3.<br \/>\n2 girls voted for Orange. Some boys voted for Orange. How many boys voted for Orange?<br \/>\nDraw a picture to solve. Then write an addition or a subtraction equation.<\/p>\n<p>Write how many boys voted for Orange.<br \/>\nAnswer:<br \/>\nNumber of students voted for Orange = 4<br \/>\nNumber of girl students voted for Orange = 2<br \/>\nNumber of boys students voted for Orange = 4 &#8211; 2 = 2.<br \/>\n2 boys voted for Orange.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6958\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Favorite-Fruits-Question-3.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Favorite-Fruits-Question-3\" width=\"316\" height=\"364\" \/><\/p>\n<p>Question 4.<br \/>\nFewer girls voted for Banana than boys. Complete the chart. Show the different ways boys and girls could have voted.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-2371\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-Grade-1-Answers-Topic-2-Fluently-Add-and-Subtract-Within-10-5.53-1.png\" alt=\"Envision Math Common Core Grade 1 Answers Topic 2 Fluently Add and Subtract Within 10 5.53\" width=\"366\" height=\"193\" \/><br \/>\nAnswer:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-6959\" src=\"https:\/\/envisionmathanswerkey.com\/wp-content\/uploads\/2021\/06\/Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Favorite-Fruits-Question-4.jpg\" alt=\"Envision-Math-Common-Core-1st-Grade-Answers-Key-Topic-2-Fluently-Add-and-Subtract-Within-10-Lesson-2.9-Look-For-and-Use-Structure-Topic-2-Assessment-Practice-Favorite-Fruits-Question-4\" width=\"580\" height=\"496\" \/><\/p>\n<p>Question 5.<br \/>\nGina says that Orange and Blueberry have the same total number of votes as Cherry and Peach. Is she correct? Explain how you know.<br \/>\nAnswer:<br \/>\nNumber of votes for Orange = 4<br \/>\nNumber of votes for Blueberry = 3<br \/>\nNumber of votes for Cherry = 3<br \/>\nNumber of votes for Peach = 4<br \/>\nNumber of votes for Orange and Blueberry = 4 + 3 = 7<br \/>\nNumber of votes for Cherry and Peach = 3 + 4 = 7.<br \/>\nYes, Gina is correct.<br \/>\nBoth equation<br \/>\n4 + 3 = 7<br \/>\n3 + 4 = 7<br \/>\nSum in same both the equations.<br \/>\nThe addends have same value. 3 and 4<br \/>\nThe addends representation in both equations is vice versa.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Practice with the help of enVision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10 regularly and improve your accuracy in solving questions. enVision Math Common Core 1st Grade Answers Key Topic 2 Fluently Add and Subtract Within 10 enVision STEM Project: Protect Yourself Find Out Think of things &#8230; <a title=\"enVision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10\" class=\"read-more\" href=\"https:\/\/bigideasmathanswers.com\/envision-math-common-core-grade-1-answer-key-topic-2\/\" aria-label=\"More on enVision Math Common Core Grade 1 Answer Key Topic 2 Fluently Add and Subtract Within 10\">Read more<\/a><\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/89974"}],"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\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/comments?post=89974"}],"version-history":[{"count":2,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/89974\/revisions"}],"predecessor-version":[{"id":89976,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/89974\/revisions\/89976"}],"wp:attachment":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media?parent=89974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/categories?post=89974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/tags?post=89974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}