The Proof! tabletop card game is the inspiration behind our online game, the Weekly Challenge Math Puzzles. Each week we post a new set of nine cards that hides a challenging equation. This is a hand-picked selection of our math games that focus specifically on subtraction. Or see all of our math puzzles here.
JAN 01 2018
1
Find a Pair of 6's
JAN 22 2018
4
Find Any Triplet Using
At Least 6 Cards
JAN 29 2018
5
Find a Triplet of 7's
Using At Least 7 Cards
FEB 12 2018
7
Find Any Triplet of
Fractions
FEB 19 2018
8
Find Any Pair Less Than 0
MAR 05 2018
10
Find 9 Different Pairs
Using Exactly 3 Cards Each
MAR 12 2018
11
Find 4 Different Triplets
MAR 26 2018
13
Find Any Pair Using All
9 Cards
APR 09 2018
15
Find Any Triplet Less Than
0
APR 16 2018
16
Find Any Pair Using
Only Subtraction
APR 30 2018
18
Find Any Pair Using At
Least 3 Square Roots
MAY 07 2018
19
Find Any Pair Using the
6, 27, and 74 Cards
MAY 21 2018
21
Find 10 Different Quadruplets
Less Than 10
JUN 04 2018
23
Find Any Quintuplet
JUN 11 2018
24
Find Any Pair Greater
Than 0 Using Exactly 8
JUN 18 2018
25
Find a Pair of 44's
JUN 25 2018
26
Find 6 Different Pairs
Less Than 20 Using Exactly
JUL 23 2018
30
Find Any Pair Greater
Than 0 Using All 9 Cards
SEP 03 2018
36
Find Any Pair Greater
Than 0 Using All 9 Cards
SEP 17 2018
38
Find 14 Different Pairs
Greater Than 0 Using...
SEP 24 2018
39
Find a Pair of 18's
Using Only Subtraction
OCT 01 2018
40
Find 6 Different Pairs
Less Than 0 Using Exactly
OCT 15 2018
42
Find 5 Different Quintuplets
Greater Than 0
OCT 22 2018
43
Find Any Pair Less Than
100 Using All 9 Cards
NOV 05 2018
45
Find 5 Different Pairs Greater
Than 50 Using the 98, 64,
NOV 19 2018
47
Find Any Pair Greater
Than 0 Using All 9 Cards
DEC 03 2018
49
Find Any Pair Using Subtraction
At Least 6 Times
DEC 10 2018
50
Find 2 Different Triplets
Greater Than 10