{"id":66657,"date":"2022-06-08T19:56:41","date_gmt":"2022-06-08T14:26:41","guid":{"rendered":"https:\/\/ccssanswers.com\/?p=66657"},"modified":"2022-05-10T14:18:32","modified_gmt":"2022-05-10T08:48:32","slug":"eureka-math-grade-1-module-1-lesson-21","status":"publish","type":"post","link":"https:\/\/ccssanswers.com\/eureka-math-grade-1-module-1-lesson-21\/","title":{"rendered":"Eureka Math Grade 1 Module 1 Lesson 21 Answer Key"},"content":{"rendered":"

Engage NY Eureka Math 1st Grade Module 1 Lesson 21 Answer Key<\/h2>\n

Eureka Math Grade 1 Module 1 Lesson 21 Problem Set Answer Key<\/h3>\n

Add the numbers on the pairs of cards. Write the number sentences. Color doubles red. Color doubles plus 1 blue.<\/p>\n

Question 1.
\n\"Eureka<\/p>\n

Answer: 6<\/a>
\n The above equation shows a pair of cards<\/a>
\nADD the pair of cards\u00a0<\/a>
\nBy adding 3 and 3<\/a>
\n we get 6<\/a>
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-1\"<\/p>\n

Question 2.
\n\"Eureka<\/p>\n

Answer:8
\n The above equation shows a pair of cards<\/a><\/span>
\nADD the pair of cards\u00a0<\/a><\/span>
\nBy adding 4 wth 4<\/a><\/span>
\n we get 8<\/a><\/span>
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-2\"<\/p>\n

Question 3.
\n\"Eureka<\/p>\n

Answer:7
\n The above equation shows a pair of cards<\/a><\/span>
\nADD the pair of cards\u00a0<\/a><\/span>
\nBy adding 3 wth 4<\/a><\/span>
\n we get 7<\/a><\/span>
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-3\"<\/p>\n

Question 4.
\n\"Eureka<\/p>\n

Answer:9
\n The above equation shows a pair of cards<\/a><\/span>
\nADD the pair of cards\u00a0<\/a><\/span>
\nBy adding 5 wth 4<\/a><\/span>
\n we get 9<\/a><\/span>
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-4\"<\/p>\n

Solve. Use your doubles to help. Draw and write the double that helped.<\/p>\n

Question 5.
\n\"Eureka<\/p>\n

Answer: 9
\nGiven the numbers are 5 and 4
\nTo find the missing number
\nAdd 5 with 4
\nwe get 9
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-5\"<\/p>\n

Question 6.
\n\"Eureka<\/p>\n

Answer:7
\nGiven the numbers are 3 and 4
\nTo find the missing number
\nAdd 3 with 4
\nwe get 7
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-6\"<\/p>\n

Question 7.
\nSolve the doubles and the doubles plus 1 number sentences.
\n\"Eureka
\nAnswer:
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-7\"<\/p>\n

Question 8.
\nShow how this strategy can help you solve 5 + 6 =
\n\"Eureka
\nAnswer:11
\nGiven the numbers are 5 and 6
\nTo find the missing number
\nAdd 5 with 6
\nwe get 11
\n\"Eureka-Math-Grade-1-Module-1-Lesson-21-Problem-Set-Answer-Key-8\"<\/p>\n

Question 9.
\nWrite a set of 4 related addition facts for the number sentences of Problem 7(d).
\nAnswer: 4+4 =8
\n8+4+4
\n4+5=9
\n9=4+5<\/p>\n

Eureka Math Grade 1 Module 1 Lesson 21 Exit Ticket Answer Key<\/h3>\n

Write the double and double plus 1 number sentence for each 5-group card.
\n\"Engage
\nAnswer:
\n\"Engage-NY-Math-1st-Grade-Module-1-Lesson-21-Exit-Ticket-Answer-Key-9\"<\/p>\n

Eureka Math Grade 1 Module 1 Lesson 21 Homework Answer Key<\/h3>\n

Question 1.
\nDraw the 5-group card to show a double. Write the number sentence to match the cards.
\na. \"Eureka
\nAnswer:The double\u00a0 fact that hlped to solve the euqation is
\n4+4=8
\nFor which the double+1 fact is 4+5=9
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-9.1\"<\/p>\n

b. \"Eureka
\nAnswer:The double\u00a0 fact that hlped to solve the euqation is
\n3+3=6
\nFor which the double+1 fact is 3+4=7
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-9.2\"<\/p>\n

c. \"Eureka
\nAnswer:The double\u00a0 fact that hlped to solve the euqation is
\n5+5=10
\nFor which the double+1 fact is 5+6=11
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-9.3\"<\/p>\n

 <\/p>\n

Question 2.
\nFill in the 5-group cards in order from least to greatest, double the number, and write the number sentences.
\na. \"Eureka<\/p>\n

b. \"Eureka<\/p>\n

c. \"Eureka<\/p>\n

d. \"Eureka<\/p>\n

e. \"Eureka
\nAnswer:
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-img<\/p>\n

Question 3.
\nSolve the number sentences.
\na. 3 + 3 = __<\/p>\n

Answer:6
\nGiven : two numbers are 3 and 3
\nBy adding 3 with 3 we get 6
\n3 + 3 = 6<\/p>\n

b. 5 + __ = 10<\/p>\n

Answer:10
\nGiven : two numbers are 5 and 10
\nby subracting 5 from 10 we get 5
\n10-5=5
\nso the issing number is 5
\n5 + 5 = 10<\/p>\n

c. 1 + __ = 2<\/p>\n

Answer: 1
\nGiven : two numbers are 1 and 2
\nby subracting 1 from 2 we get 1
\n2-1=1
\nso the issing number is 1
\n1+1=2<\/p>\n

d. 4 = __ + 2<\/p>\n

Answer:2
\nGiven : two numbers are 4 and 2
\nby subracting 2 from 4 we get 2
\n4-2=2
\nso the issing number is 2
\n4 = 2 + 2<\/p>\n

e. 8 = 4 + __<\/p>\n

Answer:4
\nGiven : two numbers are 4 and 8
\nby subracting 4 from 8 we get4
\n8-4=4
\nso the issing number is 5
\n8 = 4 + 4<\/p>\n

Question 4.
\nMatch the top cards to the bottom cards to show doubles plus 1.
\na. \"Eureka<\/p>\n

b. \"Eureka<\/p>\n

c. \"Eureka<\/p>\n

d. \"Eureka<\/p>\n

Answer:
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-img<\/p>\n

Question 5.
\nSolve the number sentences. Write the double fact that helped you solve the double plus 1.
\na. \"Eureka
\nAnswer: The double +1 fact that hlped to solve the euqation is
\n2+3=5
\nFor which the double fact is 2+2=4
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-19\"<\/p>\n

b. \"Eureka
\nAnswer:The double +1 fact that hlped to solve the euqation is
\n3+4=7
\nFor which the double fact is 3+3=6
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-20\"<\/p>\n

c. \"Eureka
\nAnswer:The double +1 fact that hlped to solve the euqation is
\n4+5=9
\nFor which the double fact is 4+4=8
\n\"Eureka-Math-1st-Grade-Module-1-Lesson-21-Homework-Answer-Key-21\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Engage NY Eureka Math 1st Grade Module 1 Lesson 21 Answer Key Eureka Math Grade 1 Module 1 Lesson 21 Problem Set Answer Key Add the numbers on the pairs of cards. Write the number sentences. Color doubles red. Color doubles plus 1 blue. Question 1. Answer: 6 The above equation shows a pair of … Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/posts\/66657"}],"collection":[{"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/comments?post=66657"}],"version-history":[{"count":1,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/posts\/66657\/revisions"}],"predecessor-version":[{"id":137539,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/posts\/66657\/revisions\/137539"}],"wp:attachment":[{"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/media?parent=66657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/categories?post=66657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccssanswers.com\/wp-json\/wp\/v2\/tags?post=66657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}