Two-digit numbers are numbers that have two digits, like 11, 25, and 38. To add them, we first need to line up the numbers by their place value. One place will be under the other one’s place, and the tens place will be under the other tens place.
You can practice adding two-digit numbers by doing the problems on the worksheet. Remember to line up the numbers by their place value and add the ones and tens place separately.
Printable Two-Digit Addition Worksheets