Subtraction within 20 worksheets

Each print is a different sheet with its own answer key. You don't need to sign up.

Think addition to subtract: for 13 − 8, ask what you add to 8 to make 13.

Two grades, each its own sheet. Print one here, or open a grade for examples and teaching notes.

Print by grade

1st grade Core grade

Examples and teaching notes

Each print is a different sheet with its own answer key. You don't need to sign up.

First graders subtract within 20 using strategies like counting back, counting up, and thinking of the matching addition fact. The stacked layout mirrors the addition sheets, so the two skills feel like one family.
2nd grade

Examples and teaching notes

Second graders are expected to subtract within 20 from memory by the end of the year. This sheet drills those facts in a vertical stack, and it works as a timed mad-minute grid too.

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