Addition Facts to 20
20 questions · 60 seconds · sums up to 10 + 10
Free · no login · instant feedback on every answer
Master addition facts to 20 — the foundation every other math skill is built on. This timed game serves 20 quick addition questions with addends from 1 to 10, giving instant feedback on every answer so mistakes get corrected the moment they happen.
Fact fluency is the goal of 1st and 2nd grade math for a reason: a student who knows 7 + 8 = 15 without counting fingers can put their whole mind on regrouping, word problems, and place value. Sixty seconds a day of focused practice builds that automatic recall faster than long worksheet sessions.
Tips That Make It Stick
- Make ten first. For 8 + 5, move 2 over: 8 + 2 = 10, then 10 + 3 = 13. "Making ten" is the single most powerful mental-math strategy for young learners.
- Know the doubles. 6 + 6, 7 + 7, 8 + 8 anchor the near-doubles: 7 + 8 is just double 7, plus one.
- Count on from the bigger number. For 3 + 9, start at 9 and count on 3 — never the other way around.
Frequently Asked Questions
What are addition facts to 20?
All the addition combinations of one-digit numbers, from 1 + 1 up to 10 + 10. Fluency with these facts — recalling them instantly without counting — is a core goal of 1st and 2nd grade math.
How fast should a child know addition facts?
A common benchmark is about 3 seconds per fact, moving toward instant recall. This game's 20 questions in 60 seconds matches that pace exactly.
Is this addition game free?
Yes — completely free with no login or download. Matching printable worksheets with answer keys are free too.
📝 Matching Printable Worksheets
Prefer paper practice? These free PDF worksheets cover the same skill — each includes an answer key: