Lesson Worksheet: Subtraction by Renaming Mathematics
In this worksheet, we will practice subtracting either a one-digit number or a two-digit number from a two-digit number using the fact that one ten equals ten ones.
Q1:
Ali is subtracting 8 from 72. He drew this to show 72 as 7 tens and 2 ones.
Find the answer to by subtracting 8 ones.
Hint: Try regrouping 1 ten into 10 ones to help.
Q2:
Amer wants to calculate . He writes 52 as 4 tens and 12 ones to be able to subtract 7 from it.
Take away 7 ones. What is ?
Q3:
Karim has the number 76. He wants to carry out a subtraction using place value cups.
Karim wants to subtract 8 from 76, so he needs to regroup the tens by removing 1 straw from the tens cup and adding 10 straws to the ones cup, as shown in the following model.
Fill in the blank: .
Q4:
Khalid used place value blocks to show 64 in 6 tens and 4 ones.
He wants to take away 6 from 64. But there are not enough ones.
Pick another way he could make 64 so he can take away 6 ones.
- A
- B
- C
- D
Take away 6 ones to find .
Q5:
A car park has 41 spaces. Two spaces are taken. How many are left?
Hint: Use a model to help you regroup and subtract.
Q6:
Faisal has 23 marbles. He decides to give his friend Ali 6 marbles. How many marbles does Faisal have left?
Hint: Regroup to be able to subtract.
Q7:
We can think about place value to help us subtract.
Pick the correct way to decompose 53 into tens and ones.
- A
- B
Subtract 7 from 53 by following these steps:
- Regroup 1 ten into 10 ones.
- Take away 7 ones.
Q8:
Joury showed the number 64 using place value blocks. 64 is 6 tens and 4 ones.
She wants to subtract 7 ones. 64 is also 5 tens and 14 ones.
Use her model to find .
Q9:
Subtract ones to find .
Hint: You may have to regroup.
Q10:
Maryam collected 31 shells from the beach yesterday. She gave 7 of them to her friend. How many shells does she have left?
Practice Means Progress
Download the Nagwa Practice app to access 12 additional questions for this lesson!
