Lesson Worksheet: Column Addition of Three-Digit Numbers: Regroup Ones and Tens Mathematics • 2nd Grade

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

Q1:

Jackson used place value blocks to show how to add 243 and 688.

What is the sum?

Q2:

Add 266 and 547. Use place value blocks if you need to.

Hint: Think about whether you need to regroup.

Q3:

Write all the numbers in the sum. Use the place value blocks to help you.

  • A
  • B
  • C
  • D

Q4:

647+284=.

Q5:

Find the sum.

Q6:

Look at this calculation.

To find the sum, will you have to regroup any tens or hundreds?

  • AI will regroup 0 tens and 0 hundreds
  • BI will regroup 1 ten and 1 hundred
  • CI will regroup 1 ten and 0 hundreds
  • DI will regroup 0 tens and 1 hundred

Find the sum.

Q7:

Calculate the following:

Q8:

Find the sum.

Hint: Think about whether you need to regroup.

Q9:

Find the sum.

Hint: Think about whether you need to regroup.

Q10:

In a parking lot, there are 248 green cars and 473 blue cars. 473+248

Use column addition to find the total number of cars.

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