Addition Facts to 20

Geared towards 1st and 2nd graders, the Addition Facts to 20 worksheet helps students build rapid recall and mental math fluency for sums up to twenty.

How to Solve Addition

Find the sum of the two numbers in each problem. Try mental math strategies like 'making ten' — for example, to solve 8 + 5, think 8 + 2 = 10, plus 3 more equals 13. Building speed with these facts is key to success with larger numbers.

You can view the preview of this worksheet below, or download the full high-resolution PDF along with the answer key for easy grading.