Worksheet: Column Addition of Three-Digit Numbers: Regroup Ones
In this worksheet, we will practice adding two three-digit numbers when we have to regroup ones and record the calculation in columns.
Use the place value blocks to help you add 617 and 238.
Will we have to regroup when adding these numbers?
- BYes, we will regroup the tens.
- CYes, we will regroup the ones.
Add the ones. Write the missing number.
Hint: What do we do if we have 10 ones?
Add the tens. Write the missing number.
Add the hundreds. Write the missing number.
Use , , or to fill in the gap: .
Uncle Noah lives on a farm that has 139 chickens and 231 cows. How many animals are on the farm in total?
Mason is solving .
He added the ones and regrouped 10 ones into a ten.
Finish his work to find the sum.
Find the following:
What is the result of the following operation?
In this addition calculation, what number should I write in the tens column?
Look at how William solved an addition problem.
Now look at this problem.
Do you need to regroup ones to make a ten when adding?
Use William’s method to find the answer.
Find the total by first making ten.
Hint: How can you break apart 4 to make a ten?
Charlotte read 125 pages of a story yesterday. Today, she read only 6 pages. What is the total number of pages that she read?