We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 5 Lesson 3 Represent Start Unknown Problems with Objects and Drawings** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 5 Lesson 3 Answer Key Represent Start Unknown Problems with Objects and Drawings

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

**Spark Your Learning**

How would you solve the problem?

Answer:

Explanation:

Ming has some books

She gets 6 more books

Now she has 15 books

To find the number of books she started with Subtract 6 from 15

15 – 6 = 9

So, Ming started with 9 books.

Read the problem to children. Ming has some books. She gets 6 more books. Now she has 15 books. How many books did Ming have to start? Hove children choose tools to solve the problem. Hove them draw to show their thinking.

**Build Understanding**

Will has some grapes. He gives 8 grapes to Tia. Now he has 6 grapes. How many grapes did Will have to start?

A. How can you show this problem?

B. Will had __ grapes to start.

C. How does this equation match the problem?

6 = – 8

Answer:

Explanation:

Will has some grapes

He gives 8 grapes to Tia

Now he has 6 grapes

To find the number of grapes Will started with add 6 and 8

6 + 8 = 14

Therefore, Will had 14 grapes to start

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

**Turn and Talk** How does your drawing explain your thinking?

Tim has some juice boxes. He gets 3 more juice boxes. Now Tim has I I juice boxes. How many juice boxes did Tim have to start?

A. Show the problem.

Answer:

B. Write an addition equation to match the problem.

Equation: ______

C. Write a subtraction equation to solve the problem.

Equation: ___

D. Tim had ___ juice boxes to start.

Explanation:

Tim has some juice boxes

He gets 3 more juice boxes

Now Tim has I I juice boxes

To find the number of juice boxes Tim started with subtract 3 from 11

11 – 3 = 8

So, Tim had 8 juice boxes to start

The equation that matches with the problem is 8 +3 = 11

The subtraction equation i used to solve the problem is 110 – 3 = 8.

**Turn and Talk** What is another way you can solve this problem?

**Check Understanding Math Board**

**Solve. Show your work.**

Question 1.

Gage has some blocks. He gives 7 blocks to Naya. Now he has 5 blocks. How many blocks did he have to start?

____ blocks

Answer:

12 blocks

Explanation:

Gage has some blocks

He gives 7 blocks to Naya

Now he has 5 blocks

To find the number of blocks he has started

Add 7 and 5

7 + 5= 12

So, Gage have 12 blocks to start.

**On Your Own**

**Solve.**

Question 2.

**Reason** Sarah has some stickers. She gets 9 stickers from a friend. Now she has 15 stickers. How many stickers did she have to start? Draw to show your thinking.

____ stickers

Answer:

Explanation:

Sarah has some stickers

She gets 9 stickers from a friend

Now she has 15 stickers

To find the number of stickers Sarah started with subtract 9 from 15

15 -9 = 6

Therefore, Sarah started with 6 stickers.

Question 3.

**Model with Mathematics** Max has some plants. He gives 4 plants to Bryce. Now he has 9 plants. How many plants did he have to start?

Equation: ____

___ plants

Answer:

13 plants

Explanation:

Max has some plants

He gives 4 plants to Bryce

Now he has 9 plants

To find the number of plants Max had to start add 9 and 4

9 + 4 = 13

The equation that matches with the problem is 13 -4 = 9

Therefore, Max has 13 plants to start.

Question 4.

17 – 8 = ___

Answer:

17 – 8 = 9

Explanation:

Subtract 8 from 17

17 – 8 = 9

Therefore, the difference of 17 and 8 is 9

So, 17 – 8 = 9.

Question 5.

11 – 5 = ___

Answer:

11 – 5 = 6

Explanation:

Subtract 5 from 11

11- 5 = 6

Therefore, the difference of 11 and 5 is 6

So, 11 – 5 = 6.

Question 6.

___ + 7 = 16

Answer:

9 + 7 = 16

Explanation:

Subtract 7 from 16

16 – 7 = 9

Therefore, the difference of 16 and 7 is 9

So, 9 + 7 = 16.

**I’m in a Learning Mindset!**

What tools can I use to solve problem 2?