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Math Games, Practice Tests, and Challenges | Caribou Contests

Today's Calcrostic Puzzle

ab + cd =  dec
 - ×  - /    +
ef × dg =  bhf
 = =  = =    =
dg × ab = djdh
What is This? | How to Solve It?

Yesterday's Solution

 9 + 36 = 45
 × ×  + -  +
 4 ×  9 = 36
 = =  = =  =
36 + 45 = 81