Lesson Worksheet: Subtracting Ones from Two-Digit Numbers with Regrouping Mathematics • 1st Grade
In this worksheet, we will practice subtracting a one-digit number from a two-digit number when crossing a ten and modeling this with place value equipment.
Q1:
Chloe used place value blocks to show that 73 is 7 tens and 3 ones.
She wants to take away 9 from 73, but there are not enough ones.
Pick another way she could make 73 so she can take away 9 ones.
- A
- B
- C
- D
Take away 9 ones to find .
Q2:
A car park has 41 spaces. Two spaces are taken. How many are left?
Q3:
Mason 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 .
Q4:
Jacob has 23 marbles. He decides to give his friend Liam 6 marbles. How many marbles does Jacob have left?
Q5:
Subtract 8 from 66.
Q6:
Noah 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 ?
Q7:
Jacob 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.
Q8:
Mia 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:
Mia is calculating . She showed 33 using place value blocks.
After she regroups and subtracts 4, how many tens and ones will be left?
- A3 tens and 4 ones
- B2 tens and 4 ones
- C3 tens and 7 ones
- D2 tens and 9 ones
Q10:
Find .
Q11:
Find .
Q12:
Olivia collected 31 shells from the beach yesterday. She gave 7 of them to her friend. How many shells does she have left?
Q13:
Look at how Mason solved a subtraction question.
Which question was he working on?
- A
- B
- C
- D
Pick one way to write down the calculation he did.
- A
- B
- C
- D
What is the answer?
Q14:
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.