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
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.