Add 3-digit Numbers Worksheets

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There are five groups of addition with regrouping worksheets:
2-digit + 1-digit (eg. 48 + 5)
2-digit + 2-digit (eg. 64 + 29)
3-digit + 2-digit (eg. 543 + 39)
3-digit + 3-digit (eg. 648 + 594)
Multi-digit Addition (eg. 12,456 + 3,376)

Second Grade math worksheets to help students practice adding 3-digit numbers to 3-digit numbers.
How to add 3 digit numbers to 3-digit numbers?

Write the hundreds, tens, and ones digits of each number directly beneath each other.
Start with the rightmost column (ones place) and add the digits.
If the sum is 10 or less, write it below the line.
If the sum is greater than 10, write the ones digit below the line and carry over the tens digit to the next column.
Add the digits in the middle column (tens place), including any carried-over tens.
If the sum is 10 or less, write it below the line.
If the sum is greater than 10, write the ones digit below the line and carry over the tens digit to the next column.
Add the digits in the leftmost column (hundreds place), including any carried-over hundreds.
Write the sum below the line.

Have a look at this video if you need help adding 3-digit numbers.

Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Add 3-digit Numbers Worksheets.

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