Lesson Worksheet: Column Addition of Three-Digit Numbers: Regroup Ones Mathematics • 2nd Grade
In this worksheet, we will practice adding two three-digit numbers when we have to regroup ones and record the calculation in columns.
Q3:
Use the place value blocks to help you add 617 and 238.
Will we have to regroup when adding these numbers?
- ANo
- BYes, we will regroup the tens.
- CYes, we will regroup the ones.
Add the ones. Write the missing digit.
Hint: What do we do if we have 10 ones?
Add the tens. Write the missing digit.
Add the hundreds. Write the missing digit.
Q4:
Mason is solving .
He added the ones and regrouped 10 ones into a ten.
Finish his work to find the sum.
Q7:
In this addition calculation, what digit should I write in the tens column?
Q8:
Look at how James solved an addition problem.
Now look at this problem.
Do you need to regroup ones to make a ten when adding?
- ANo
- BYes
Use James’s method to find the answer.
Q9:
Add 148 to 235.
Remember to regroup the ones if they add up to 10 or more.
Q10:
Add 237 and 53 using the place value blocks in the chart. The ones have already been regrouped for you.