2nd Grade Subtract Within 20 worksheets

About this worksheet

By the end of second grade children should know their subtraction facts within 20 so well that they can answer without counting on their fingers. That fluency is what makes two-digit and three-digit subtraction manageable later, because every column of a longer problem is really one small fact. This sheet is only subtraction facts, each written the same way, such as 13 - 6, with a line for the answer.

The facts that cross ten, like 15 - 8, are the ones children find hardest, and they are well represented here. Encourage a strategy rather than counting back one at a time: take away to the ten first (15 - 5 = 10), then take away the rest (10 - 3 = 7). Or think of the matching addition fact: 8 + 7 = 15, so 15 - 8 = 7. Do a few together, then let your child finish the page alone.

What your child will learn

• Subtract within 20 from memory
• Subtract across ten by making ten first
• Use an addition fact to check a subtraction fact

Common Core standard: 2.OA.B.2