# 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.