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 on square roots. If you would like, you can create an account to save your progress. Or if you already have an account, you can log in.

4.
Find Any Triplet Using At Least 6 Cards
6.
Find Any Pair of Fractions
10.
Find 9 Different Pairs Using Exactly 3 Cards Each
12.
Find a Pair of 100's
14.
Find Any Quadruplet
17.
Find a Quadruplet of 1's
18.
Find Any Pair Using At Least 3 Square Roots
21.
Find 10 Different Quadruplets Less Than 10
22.
Find Any Pair Using Multiplication At Least 3 Times
24.
Find Any Pair Greater Than 0 Using Exactly 8 Cards
26.
Find 6 Different Pairs Less Than 20 Using Exactly 3 Cards each
27.
Find Any Triplet Using At Least 5 Square Roots and No Addition or Subtraction
30.
Find Any Pair Greater Than 0 Using All 9 Cards
32.
Find Two Different Triplets
33.
Find a Pair of 27's
37.
Find a Triplet of 8/9's
42.
Find 5 Different Quintuplets Greater Than 0
46.
Find a Quadruplet of 5/7's
50.
Find 2 Different Triplets Greater Than 10
52.
Find 7 Different Pairs of Fractions Less Than 1

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