Adding 3 Numbers Worksheets

This is a collection of adding three numbers worksheets. These are classic worksheets for homework, math centers, and sub-plans, and general practice. 

Take note that this is a subset of our addition worksheets.

What You'll Get

You will receive several printable files. These are 2-page files with worksheets and answer keys. They are organized into folders for easy access. Just pick a worksheet, print and you're ready to go. 

There are three exam types with a different number of digits.  Each group has 15 worksheets.

Adding 3 Numbers, Addends are aligned. Students are asked to add the three numbers and write their answers on the space provided.

• 1 digit – Ideal for mental math
• 1 to 2 digits
• 2 digits
• 2 to 3 digits
• 3 digits

Adding 3 Numbers, Show Solution. Students need to rewrite and align the three numbers and then perform addition.

• 1 to 2 digits
• 2 digits
• 2 to 3 digits
• 3 digits
• 3 to 4 digits

Add 3 numbers, 2 sums. Students would need to add the first two numbers, and then add the result to the third number.

• 1 digit – Ideal for mental math
• 1 to 2 digits
• 2 digits
• 2 to 3 digits
• 3 digits