Engage NY Eureka Math 1st Grade Module 1 Lesson 27 Answer Key
Eureka Math Grade 1 Module 1 Lesson 27 Problem Set Answer Key
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Rewrite the subtraction number sentence as an addition number sentence.
Place a 
around the unknown. Use the number path if you want to.
Question 1.
Answer:
Question 2.
Answer:
Question 3.
Answer:
Question 4.
Answer:
Question 5.
Answer:
Use the number path to count on.
Question 6.
Answer:
Question 7.
Answer:
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Hop back on the number path to count back.
Question 8.
10 – 1 = ______
Answer:9
10-1=9
Question 9.
9 – 2 = ______
Answer:7
9-2=7
Question 10.
Pick the best way to solve the problem. Check the box.
Answer:
Eureka Math Grade 1 Module 1 Lesson 27 Exit Ticket Answer Key
To solve 7 – 6, Ben thinks you should count back, and Pat thinks you should count on. Which is the best way to solve this expression? Make a simple math drawing to show why.
7 – 6 = _____
Answer: Count on ,Ben is right becaue counting from 6 to 7 is simple tham 7 to back till 6 digits
7-6=1
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Eureka Math Grade 1 Module 1 Lesson 27 Homework Answer Key
Use the number path to complete the number bond, and write an addition and a subtraction sentence to match.
Question 1.
a. 
Answer:
b. 
Answer:
Question 2.
Solve the number sentences. Pick the best way to solve. Check the box.
Answer:
Question 3.
Solve the number sentence. Pick the best way to solve. Use the number path to show why.
I counted _____________ because it needed fewer hops.
Answer: I counted on because it needed fewer hops.
I counted _____________ because it needed fewer hops.
Answer: I counted back because it needed fewer hops.
Make a math drawing or write a number sentence to show why this is best.
Answer:
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