Addition Practice
Addition combines two numbers into a sum. Practice single-digit sums, or add two 2-digit numbers with or without regrouping, with instant answer checking. Free, with no login; progress saves in this browser.
Single-digit addition
1-Digit Addition
Add two numbers from 0 to 9. Sums run from 0 to 18.
Addition puts two groups together.
7 + 5 = 12
Two-digit addition
Do the ones make a new ten?
Both practices add two 2-digit numbers. What differs is whether the ones add to 10 or more.
2-Digit Addition Without Regrouping
No place needs to be regrouped. Answers run from 20 to 99.
2-Digit Addition With Regrouping
The ones add to 10 or more, so 10 ones become 1 ten. Answers run from 30 to 198. Many people call this carrying.
In 43 + 25 and 43 + 29, only the ones digit of the second number is different.
No regrouping
Regrouping
Helpful resources
- Addition Worksheets Print addition worksheets with or without an answer key.
- Subtraction Practice Addition and subtraction are inverse operations.