Eureka Math Grade 2 Module 5 Lesson 7 Answer Key

Engage NY Eureka Math 2nd Grade Module 5 Lesson 7 Answer Key

Eureka Math Grade 2 Module 5 Lesson 7 Problem Set Answer Key

Question 1.
Circle the student work that shows a correct solution to 543 + 290.
Eureka Math Grade 2 Module 5 Lesson 7 Problem Set Answer Key 1

Answer:
The correct solution is 853.

Explanation:
In the above-given question,
given that,
circle the student work that shows a correct solution.
543 + 290.
543 + 10 = 553.
290 + 10 = 300.
553 + 300 = 853.
543 + 290 = 853.
Eureka-Math-Grade-2-Module-5-Lesson-7- Answer Key-1

Question 2.
Circle the student work that correctly shows a strategy to solve 721 – 490.
Eureka Math Grade 2 Module 5 Lesson 7 Problem Set Answer Key 2

Answer:
721 – 490 = 231.

Explanation:
In the above-given question,
given that,
721 – 490.
721 + 10 = 731.
490 + 10 = 500.
731 – 500 = 231.
Eureka-Math-Grade-2-Module-5-Lesson-7- Answer Key-2

Fix the work that is incorrect by making a new drawing in the space below with a matching number sentence.

Answer:
721 – 490 = 231.

Explanation:
In the above-given question,
given that,
721 – 490.
721 + 10 = 731.
490 + 10 = 500.
731 – 500 = 231.

Question 3.
Two students solved 636 + 294 using two different strategies.
Eureka Math Grade 2 Module 5 Lesson 7 Problem Set Answer Key 3
Explain which strategy would be easier to use when solving and why.
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________

Answer:
The second method is very easy to understand.

Explanation:
In the above-given question,
given that,
636 + 294.
636 = 630 + 6.
294 + 6 = 300.
300 + 630 = 930.
so the number bond method is easy.

Question 4.
Circle one of the strategies below, and use the circled strategy to solve 290 + 374.

a.

arrow way / number bond

290 + 374 = 664.
200 + 90 = 290.
300 + 70 + 4 = 374.
374 + 290 = 664.

b. Solve:

Answer:
290 + 374 = 664.

Explanation:
In the above-given question,
given that,
290 + 374.
374 = 10 + 364.
290 + 10 = 300.
300 + 364 = 664.

c. Explain why you chose that strategy.
______________________________________________________________
______________________________________________________________
______________________________________________________________

Answer:
The number bond method is very easy to solve and also understand.

Explanation:
In the above-given question,
given that,
290 + 374.
374 = 10 + 364.
290 + 10 = 300.
300 + 364 = 664.
290 + 374 = 664.

Eureka Math Grade 2 Module 5 Lesson 7 Exit Ticket Answer Key

Circle one of the strategies below, and use the circled strategy to solve 490 + 463.

a.

arrow way / number bond

490 + 463.
400 + 90 = 490.
400 + 60 + 3 = 463.
490 + 463 = 953.

b. Solve:

Answer:
490 + 463 = 953.

Explanation:
In the above-given question,
given that,
490 + 463.
463 = 10 + 453.
490 + 10 = 500.
500 + 453 = 953.

c. Explain why you chose that strategy.
______________________________________________________________
______________________________________________________________
______________________________________________________________

Answer:
The number bond method is very easy to solve and also understand.

Explanation:
In the above-given question,
given that,
490 + 463.
463 = 10 + 453.
490 + 10 = 500.
500 + 453 = 953.

Eureka Math Grade 2 Module 5 Lesson 7 Homework Answer Key

Question 1.
Solve each problem with a written strategy such as a tape diagram, a number bond, the arrow way, the vertical form, or chips on a place value chart.
a. 370 + 300 = __670___

Answer:
370 + 300 = 670.

Explanation:
In the above-given question,
given that,
370 + 300.
300 + 70 = 370.
370 + 300 = 670.

b. __362___ = 562 – 200

Answer:
562 – 200 = 362.

Explanation:
In the above-given question,
given that,
500 + 60 = 560.
560 + 2 = 562.
562 – 200 = 362.

c. __312____ + 500 = 812

Answer:
312 + 500 = 812.

Explanation:
In the above-given question,
given that,
300 + 10 + 2.
300 = 3 hundreds.
10 = 1 ten.
2 = 2 ones.
300 + 10 + 2 = 312.
312 + 500 = 812.

d. 230 – 190 = __40____

Answer:
230 – 190 = 40.

Explanation:
In the above-given question,
given that,
200 + 30 = 230.
100 + 90 = 190.
230 – 190 = 40.

e. __460____= 640 – 180

Answer:
640 – 180 = 460.

Explanation:
In the above-given question,
given that,
640 – 180.
600 + 40 = 640.
100 + 80 = 180.
640 – 180 = 460.

f. 450 – 290 = __160____

Answer:
450 – 290 = 160.

Explanation:
In the above-given question,
given that,
400 + 50 = 450.
200 + 90 = 290.
450 – 290 = 160.

Question 2.
Use the arrow way to complete the number sentences.
a. 420 – 230 = __190___ b.

Answer:
420 – 230 = 190.

Explanation:
In the above-given question,
given that,
use the arrow way to complete the number sentences.
420 – 230.
400 + 20 = 420.
200 + 30 = 230.
420 – 230 = 190.

b. 340 – 160 = ___180____ c.

Answer:
340 – 160 = 180.

Explanation:
In the above-given question,
given that,
use the arrow way to complete the number sentences.
300 + 40 = 340.
100 + 60 = 160.
340 – 160 = 180.

c. 710 – 350 = ___360_____

Answer:
710 – 350 = 360.

Explanation:
In the above-given question,
given that,
use the arrow way to complete the number sentences.
700 + 10 = 710.
300 + 50 = 350.
710 – 350 = 360.

Question 3.
Solve 667 + 295 using two different strategies.

667 + 295.

667 = 662 + 5.
295 + 5 = 300.
662 + 300 = 962.

667 + 295 = 962.

______________________________________________________________
______________________________________________________________
______________________________________________________________

Answer:
667 + 295 = 962.

Explanation:
In the above-given question,
given that,
667 + 295.
667 = 662 + 5.
295 + 5 = 300.
662 + 300 = 962.

Question 4.
Circle one of the strategies below, and use the circled strategy to solve 199 + 478.

a.

arrow way / number bond

199 + 478.
478 = 477 + 1.
199 + 1 = 200.
200 + 477 = 677.

b. Solve:

______________________________________________________________
______________________________________________________________
______________________________________________________________

Answer:
199 + 478 = 677.

Explanation:
In the above-given question,
given that,
solve using the arrow way or number bond.
199 + 478.
478 = 477 + 1.
199 + 1 = 200.
200 + 477 = 677.

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