The Proof! tabletop card game is the inspiration behind our free, online Math Puzzle Challenges. Each carefully constructed puzzle consists of a set of nine cards that hides a challenging equation. This is a hand-picked selection of our math games that focus specifically on addition. If you would like, you can create an account to save your progress. Or if you already have an account, you can log in.

41.
Find a Pair of 10000's
42.
Find 5 Different Quintuplets Greater Than 0
44.
Find Any Pair Using Addition At Least 4 Times
45.
Find 5 Different Pairs Greater Than 50 Using the 98, 64, and 16
48.
Find 15 Different Pairs Greater Than 100
50.
Find 2 Different Triplets Greater Than 10
51.
Find a Pair of 1's Using Only Division and Addition
53.
Find a Pair of 2019's

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