2nd grade addition within 20 worksheets

By 2nd grade the goal is memory, not counting. Students should know every sum of two one-digit numbers by heart. This sheet drills addition facts to 20 in a stacked format; add a timer for a mad-minute grid.

Free printable PDF worksheet, aligned to Common Core 2.OA.B.2.

A new sheet every click.

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The kind of problems you'll get

Solve each problem. Write your answer on the line.

8 + 7 =
Answer: 15
6 + 8 =
16 + 2 =

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on each sheet

Fluency. Solve each problem. Write your answer on the line. 30 questions per page.
Mad-Minute Grid. Solve as many as you can. Write each answer under its problem. 30 questions per page.

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Aim for about three seconds per fact. Anything slower gets circled and repeated tomorrow. Short daily rounds beat one long session. Once accuracy is steady, add a one-minute timer and track how many facts get done.

Watch for: Kids count all the way up from one. Start at the bigger number and count on, or make a ten first (9 + 6 is 10 + 5). Kids stall at sums that cross ten. Break the second addend to fill the ten: 8 + 5 becomes 8 + 2 + 3.

Common questions about addition within 20

Can I use this for mad minute practice?: Yes. Set a one-minute timer and count the correct answers. The 2nd grade sheet has 30 facts, and every print is a new mad minute.
How fast should a 2nd grader know these facts?: By the end of 2nd grade, sums of two one-digit numbers should come from memory. About three seconds per fact is a fair target.

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Aligned to Common Core 2.OA.B.2. Reviewed by the One more sheet curriculum team. Content version 123, updated July 2026.