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

We included HMH 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  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 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.  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 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 = ___ Explanation:
The difference of 6 and 1 is 5
So, 6 – 1 = 5.

Question 3.
___ = 10 – 2 Explanation:
The difference of 10 and 2 is 8
So, 10 – 2 = 8.

Question 4.
8 – 8 = ___ Explanation:
The difference of 8 and 8 is 0
So, 8 – 8 = 0.

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 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.
___ – ___ = ___
___ – ___ = ___
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 = ___ Explanation:
The difference of 3 and 3 is 0
So, 3 – 3 = 0

Question 8.
8 – 7 = ___ Explanation:
The difference of 8 and 7 is 1
So, 8 – 7 = 1.

Question 9.
___ = 10 – 1 Explanation:
The difference of 10 and 1 is 9
So, 10 – 1 = 9.

Question 10.
___ = 10 – 0 Explanation:
The difference of 10 and 0 is 10
So, 10 – 0 = 10.

Question 11.
3 – 2 = ___ Explanation:
The difference of 3 and 2 is 1
So, 3 – 2 = 1.

Question 12.
7 – 5 = ___ Explanation:
The difference of 7 and 5 is 2
So, 7 – 5 = 2

Question 13.
___ = 5 – 3 Explanation:
The difference of 5 and 3 is 2
So, 5 – 3 = 2.

Question 14.
___ = 10 – 8 Explanation:
The difference of 10 and 8 is 2
So, 10 – 8 = 2.

Question 15.
9 – 3 = ___ Explanation:
The difference of 9 and 3 is 6
So, 9 – 3 = 6.

Question 16.
___ = 8 – 4 Explanation:
The difference of 8 and 4 is 4
So, 8 – 4 = 4.

Question 17.
6 – 2 = ___ Explanation:
The difference of 6 and 2 is 4
So, 6 – 2 = 4.

Question 18.
___ = 9 – 8 Explanation:
The difference of 9 and 8 is 1
So, 9 – 8 = 1.

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  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.  Explanation:
The difference of 5 and 3 is 2
So, 5 – 3 = 2.

Question 21.  Explanation:
The difference of 4 and 3 is 1
So, 4 – 3 = 1.

Question 22.  Explanation:
The difference of 9 and 4 is 5
So, 9 – 4 = 5.

Question 23.  Explanation:
The difference of 10 and 7 is 3
So, 10 – 7 = 3.

Question 24.  Explanation:
The difference of 7 and 0 is 7
So, 7 – 0 = 7.

Question 25.  Explanation:
The difference of 8 and 3 is 5
So, 8 – 3 = 5.

Question 26.  Explanation:
The difference of 7 and 6 is 1
So, 7 – 6 = 1.

Question 27.  Explanation:
The difference of 10 and 7 is 3
So, 10 – 7 = 3.

Question 28.  Explanation:
The difference of 9 and 1 is 8
So, 9 – 1 = 8.

Question 29.  Explanation:
The difference of 7 and 3 is 4
So, 7 – 3 = 4.

Question 30.  Explanation:
The difference of 8 and 2 is 6
So, 8 – 2 = 6.

Question 31.  