# Worksheet: Ten More and Ten Less: Numbers up to 100

In this worksheet, we will practice finding ten more or ten less than any number up to 100 and investigating how the number of tens and the number of ones change.

**Q1: **

Find **10 more** than 20. Use the base ten blocks to help you.

**Q2: **

Find the two-digit number and then find 10 **more**.

Which picture shows 26?

- A
- B
- C

Now, find 10 **more** than 26.

**Q3: **

We can use number bonds to ten to help us find 10 more than any tens number.

If we know that , we also know that .

We have just made the numbers bigger by 10.

Use number bonds to help you find 10 more than 80.

**Q4: **

William writes the number 87 on his chart.

If he finds **10 less**, what will happen in each column?

- AThe ones will go down by 1. The tens will stay the same.
- BThe tens will go down by 1. The ones will stay the same.

Now, find **10 less** than 87. What will the new number be?

**Q6: **

Find 10 more than 89: .

- A100
- B99
- C90

**Q7: **

Find **10 less** than 50. Use the base ten blocks to help you.

**Q8: **

Find the picture that shows **10 less** than 38.

- A
- B
- C

**Q9: **

Fill in the blank: .

**Q10: **

Fill in the blank: .

**Q11: **

What number is missing?

**Q13: **

We can use number bonds to ten to help us find 10 more than any tens number.

If we know that , we also know that .

We have just made the numbers 10 times bigger.

Use number bonds to help you find 10 more than 60.

**Q14: **

Jennifer writes the number 63 on her chart.

If she adds **10 more**, what will happen in each column?

- AThe ones will go up by 1. The tens will stay the same.
- BThe tens will go up by 1. The ones will stay the same.

Now, add **10 more** to 63. What will the new number be?

**Q16: **

49 is 10 less than .

**Q17: **

Find the missing label.

Number | 10 More | |
---|---|---|

3 | 13 | 23 |

- A10 More
- B10
- C10 Less

**Q18: **

Which number is NOT 10 less than 65?

- A55
- B75

**Q19: **

Which number is NOT 10 more than 32?

- A22
- B42

**Q20: **

Let’s think about finding **10 less**.

Which picture shows 37?

- A
- B
- C

Now, find **10 less** than 37.

**Q22: **

Find the missing label.

10 Less | Number | |
---|---|---|

19 | 29 | 39 |

- A10 Less
- B10
- C10 More

**Q23: **

94 is ten **more** than .

**Q25: **

Ten **less** than 85 is .