Subtraction Facts from 20

Our Subtraction Facts from 20 worksheet is a critical resource for 1st and 2nd graders building mental math speed and fluency with differences up to twenty.

How to Solve Subtraction

Find the difference between the two numbers. Use the relationship between addition and subtraction to help — for example, if you know 7 + 8 = 15, then 15 - 8 = 7. Practicing these facts until they become automatic is key for tackling larger subtraction problems.

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