# Worksheet: Column Addition of Three-Digit Numbers: Regroup Tens

In this worksheet, we will practice adding two three-digit numbers when we have to regroup tens and record the calculation in columns.

**Q2: **

Find the answer to .

**Q3: **

Calculate the following:

**Q4: **

Jacob and Mason are trying to add 375 and 572. Jacob says the result is 947, while Mason says the result is 848. Which one of them is right?

- AJacob
- BMason

**Q5: **

Find the following:

**Q6: **

Use column addition to find .

**Q7: **

Look at this question.

Will we regroup when finding the sum?

- ANo
- BYes, we will regroup 10 tens into a hundred.
- CYes, we will regroup 10 ones into a ten.

What is ?

**Q8: **

Find the sum.

**Q9: **

Jackson collected 146 marbles, while Anthony collected 172 marbles. What is the total number of marbles that they collected together?

**Q10: **

Use place value blocks to show how to add 342 and 183.

**Q11: **

Add 452 and 72 using place value blocks.