We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 4 Lesson 7 Develop Fluency in Subtraction** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 4 Lesson 7 Answer Key Develop Fluency in Subtraction

I Can quickly solve subtraction facts within 10.

**Step It Out**

1. Annie has 8 flowers. She wants to give some to Grace and the rest to Marco. What are two ways Annie can give her flowers away?

A. Think of a way to subtract from 8. Draw and write to show your thinking.

8 – ___ = ___

__ flowers to Grace

__ flowers to Marco

Answer:

Explanation:

One way

Annie has 8 flowers

She wants to give some to Grace and the rest to Marco

I subtract 3 from 8

8 – 3 = 5

So, 3 flowers to Grace

5 flowers to Marco.

B. Think of another way to subtract from 8. Draw and write to show your thinking.

8 – ___ = ___

__ flowers to Grace

__ flowers to Marco

Answer:

Explanation:

Another way

Annie has 8 flowers

She wants to give some to Grace and the rest to Marco

I subtract 4 from 8

8 – 4 = 4

So, 4 flowers to Grace

4 flowers to Marco.

**Step It Out**

2. Write three ways to subtract from 7.

A. Think of strategies you can use.

B. Write your ways.

Answer:

Explanation:

One way:

Subtract 4 from 7

Start at 7 count back till 4

I counted 3 ones

So, 7 – 4 = 3

Second way:

Subtract 5 from 7

Start at 5

Think how many to add to get 7

5 + 2 = 7

So, 7 – 5 = 2

Third way:

Subtract 6 from 7

Use related facts

6 + 1 = 7

1 + 6 = 7

So, 7 – 6 = 1.

**Turn and Talk** Why do the subtraction problems above start with the total on top?

**Check Understanding Math Board**

**Write a subtraction equation to solve.**

Question 1.

There are 9 bees. Then 2 fly away. How many bees are there now?

___ -___ = ___

__ bees

Answer:

Explanation:

There are 9 bees

Then 2 fly away

9 – 2 = 7

So, there are 7 bees now.

**Subtract. Write the difference.**

Question 2.

6 – 1 = ___

Answer:

Explanation:

The difference of 6 and 1 is 5

So, 6 – 1 = 5.

Question 3.

___ = 10 – 2

Answer:

Explanation:

The difference of 10 and 2 is 8

So, 10 – 2 = 8.

Question 4.

8 – 8 = ___

Answer:

Explanation:

The difference of 8 and 8 is 0

So, 8 – 8 = 0.

**On Your Own**

**Write a subtraction equation to solve.**

Question 5.

**Model with Mathematics** 7 horses are in a field. 4 are brown. The rest are white. How many horses are white?

___ – ___ = ___

___ white horses

Answer:

Explanation:

7 horses are in a field

4 are brown

The rest are white

7 – 4 = 3

So, 3 horses are white.

Question 6.

**Open Ended** Write two subtraction equations that use the same three numbers.

___ – ___ = ___

___ – ___ = ___

Answer:

7 – 4 = 3

7 – 3 = 4

Explanation:

The above two equations are subtraction equations

Both the equations use the same three numbers.

**Subtract. Write the difference.**

Question 7.

3 – 3 = ___

Answer:

Explanation:

The difference of 3 and 3 is 0

So, 3 – 3 = 0

Question 8.

8 – 7 = ___

Answer:

Explanation:

The difference of 8 and 7 is 1

So, 8 – 7 = 1.

Question 9.

___ = 10 – 1

Answer:

Explanation:

The difference of 10 and 1 is 9

So, 10 – 1 = 9.

Question 10.

___ = 10 – 0

Answer:

Explanation:

The difference of 10 and 0 is 10

So, 10 – 0 = 10.

Question 11.

3 – 2 = ___

Answer:

Explanation:

The difference of 3 and 2 is 1

So, 3 – 2 = 1.

Question 12.

7 – 5 = ___

Answer:

Explanation:

The difference of 7 and 5 is 2

So, 7 – 5 = 2

Question 13.

___ = 5 – 3

Answer:

Explanation:

The difference of 5 and 3 is 2

So, 5 – 3 = 2.

Question 14.

___ = 10 – 8

Answer:

Explanation:

The difference of 10 and 8 is 2

So, 10 – 8 = 2.

Question 15.

9 – 3 = ___

Answer:

Explanation:

The difference of 9 and 3 is 6

So, 9 – 3 = 6.

Question 16.

___ = 8 – 4

Answer:

Explanation:

The difference of 8 and 4 is 4

So, 8 – 4 = 4.

Question 17.

6 – 2 = ___

Answer:

Explanation:

The difference of 6 and 2 is 4

So, 6 – 2 = 4.

Question 18.

___ = 9 – 8

Answer:

Explanation:

The difference of 9 and 8 is 1

So, 9 – 8 = 1.

**On Your Own**

**Subtract to solve.**

Question 19.

**Model with Mathematics** 9 fire trucks are at the station. Then 5 fire trucks leave. How many fire trucks are at the station now?

___ fire trucks

Answer:

Explanation:

9 fire trucks are at the station

Then 5 fire trucks leave

9 – 5 = 4

So, 4 fire trucks are at the station now.

**Subtract. Write the difference.**

Question 20.

Answer:

Explanation:

The difference of 5 and 3 is 2

So, 5 – 3 = 2.

Question 21.

Answer:

Explanation:

The difference of 4 and 3 is 1

So, 4 – 3 = 1.

Question 22.

Answer:

Explanation:

The difference of 9 and 4 is 5

So, 9 – 4 = 5.

Question 23.

Answer:

Explanation:

The difference of 10 and 7 is 3

So, 10 – 7 = 3.

Question 24.

Answer:

Explanation:

The difference of 7 and 0 is 7

So, 7 – 0 = 7.

Question 25.

Answer:

Explanation:

The difference of 8 and 3 is 5

So, 8 – 3 = 5.

Question 26.

Answer:

Explanation:

The difference of 7 and 6 is 1

So, 7 – 6 = 1.

Question 27.

Answer:

Explanation:

The difference of 10 and 7 is 3

So, 10 – 7 = 3.

Question 28.

Answer:

Explanation:

The difference of 9 and 1 is 8

So, 9 – 1 = 8.

Question 29.

Answer:

Explanation:

The difference of 7 and 3 is 4

So, 7 – 3 = 4.

Question 30.

Answer:

Explanation:

The difference of 8 and 2 is 6

So, 8 – 2 = 6.

Question 31.

Answer:

Explanation:

The difference of 10 and 5 is 5

So, 10 – 5 = 5.