# Worksheet: Adding Multiples of 10

In this worksheet, we will practice adding two tens numbers with or without using base ten blocks.

**Q6: **

Find the number that when added to 20 gives 90.

- A80
- B60
- C30
- D70
- E40

**Q9: **

Charlotte is adding 15, 8, and 28.

She added the ones first.

Add the tens to finish her work and find the total.

**Q11: **

Dalia spilled ink on her homework.

Find the covered numbers.

**Q12: **

How many tens are there altogether?

**Q13: **

Find the sum.

*Hint*: Add the ones then the tens.

**Q16: **

Find the sum.

*Hint*: Think about what happens when there are more than 10 ones.

**Q21: **

Ramy is using base ten blocks to help him add 9 to 34.

He adds the ones first. There are 13 ones.

Pick the model that shows what he should do.

- A
- B
- C

Find the sum.

**Q23: **

Pick a model that shows the sum.

*Hint*: Think about what happens when there are more than 10 ones.

- A
- B
- C

**Q24: **

Find the sum.

*Hint*: Add the ones then the tens.

**Q25: **

Look at how Dalia adds numbers.