Add 3-digit Numbers Worksheets

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)

Add 3-digit Numbers Worksheets

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?

1. Write the hundreds, tens, and ones digits of each number directly beneath each other.
   
2. 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.
   
3. 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.
   
4. 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.

• 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.

 

More Add 3-digit Numbers Worksheets

(Answers on the second page)
Add 3-digit Numbers Worksheet #1
Add 3-digit Numbers Worksheet #2
Add 3-digit Numbers Worksheet #3
Add 3-digit Numbers Worksheet #4

3-digit plus 3-digit Numbers (Interactive)

Related Worksheets

2-digit + 1-digit (with regrouping) (eg. 48 + 5)
2-digit + 2-digit (with regrouping) (eg. 64 + 29)
3-digit + 2-digit (with regrouping) (eg. 543 + 39)

2-digit + 1-digit (Interactive)
2-digit + 2-digit (Interactive)
3-digit + 1-digit (Interactive)
3-digit + 2-digit (Interactive)

More Printable Worksheets

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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