We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 5 Lesson 2 Represent Change Unknown Problems with Objects and Drawings** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 5 Lesson 2 Answer Key Represent Change Unknown Problems with Objects and Drawings

I Can add or subtract to solve word problems when the change is unknown and represent the problem with objects, drawings, and equations.

**Spark Your Learning**

How would you solve this problem?

Answer:

Explanation:

The children selected the number 6,

Wrote the number 6 in the blank

After adding some more oranges to the basket it has 16 oranges now

Subtract 6 from 16

16 – 6 = 10

Therefore, 10 oranges were added to the basket.

Children work in pairs. Have one child choose a number from 6 to 9. Tell them this is the number of oranges in a basket and have them write their number. Then tell them that more oranges are added to the basket and now there are 16 oranges in the basket. Have them find how many oranges were added and draw to show what they did.

**Build Understanding**

Bea has 14 toy cars. She gives some to Jaylen. Now she has 8 toy cars. How many toy cars does Bea give to Jaylen?

A. How can you show the problem?

B. How many toy cars does Bea give to Jaylen? ____

C. How does this equation match the problem?

14 – = 8

Answer:

Explanation:

Bea has 14 toy cars. She gives some to Jaylen

Now she has 8 toy cars

Subtract 8 from 14

14 – 8 = 6

Therefore, Bea gave 6 toy cars to Jaylen.

The equation that match the problem is 14 – 8 = 6.

**Turn and Talk** What is an equation you could use to solve the problem?

Matias has 9 books. He gets some more books. Now he has 13 books. How many books does he get?

9 + = 13

A. Show the problem.

B. Write an addition equation that matches the problem.

Equation: ____

Matia gets __ books.

Answer:

Matias gets 4 books

Explanation:

Matias has 9 books

He gets some more books

Now he has 13 books.

To find the number of books Matias gets

Subtract 9 from 3

13 – 9 = 4

The equation that matches the problem is 9 + 4 = 13

Matias gets 4 books.

**Check Understanding Math Board**

**Solve. Show your work.**

Question 1.

There are 7 dogs at a dog park. Some more dogs come. Now there are 15 dogs. How many more dogs come?

Equation: ____

___ dogš come to the park.

Answer:

8 dogs come to the park

Explanation:

There are 7 dogs at a dog park

Some more dogs come

Now there are 15 dogs

To find the number of dogs that came to park

Subtract 7 from 15

15 – 7 = 8

The equation is 7 + 8 = 15

Therefore, 8 dogs came to the park.

**On Your Own**

**Solve.**

Question 2.

Yuna has flags from 16 countries. She gives some to her brother. Now she has 7 flags. How many flags does Yuna give her brother? Draw to show your thinking.

____ flags

Answer:

9 flags

Explanation:

Yuna has flags from 16 countries

She gives some to her brother

Now she has 7 flags

To find the number of flags Yuna gave her brother

Subtract 7 from 16

16 – 7 = 9

Therefore, Yuna gave 9 flags to her brother.

Question 3.

**Model with Mathematics** Martin has 5 clean socks. He gets some more clean socks. Now he has 12 clean socks. How many clean socks does he get?

Equation: ______

Martin gets ___ clean socks.

Answer:

Martin gets 7 clean socks

Explanation:

Martin has 5 clean socks

He gets some more clean socks

Now he has 12 clean socks

To find the number of clean socks she gets

Subtract 5 from 12

12 – 5 = 7

The equation that matches with the problem is 5 + 7 = 12

Therefore, Martin gets 7 clean socks.

Question 4.

7 + ___ = 14

Answer:

7 + 7 = 14

Explanation:

Subtract 7 from 14

14 – 7 = 7

So, the sum of 7 and 7 is 14

Therefore, 7 + 7 = 14.

Question 5.

13 – ___ = 4

Answer:

13 – 9 = 4

Explanation:

Subtract 4 from 13

13 – 4 =9

So, the difference of 13 and 4 is 9

Therefore, 13 – 9 = 4.

Question 6.

9 + ___ = 17

Answer:

9 + 8 = 17

Explanation:

Subtract 9 from 17

17 – 9 = 8

So, the sum of 9 and 8 is 17

Therefore, 9 + 8 = 17.

Question 7.

14 – ___ = 5

Answer:

14 – 9 = 5

Explanation:

Subtract 5 from 14

14 – 5 = 9

So, the difference of 14 and 5 is 9

Therefore, 14 – 9 = 5.

Question 8.

13 = 6 + ___

Answer:

13 = 6 + 7

Explanation:

Subtract 6 from 13

13 – 6 = 7

So, the difference of 13 and 6 is 7

Therefore, 13 = 6 + 7.

Question 9.

12 – ___ = 9

Answer:

12 – 3 = 9

Explanation:

Subtract 9 from 12

12 – 9 = 3

So, the difference of 12 and 9 is 3

Therefore, 12 – 3 = 9.

**I’m in a Learning Mindset!**

What is still unclear about solving Change Unknown problems?

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