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Math Games, Practice Tests, and Challenges | Caribou Contests

Today's Calcrostic Puzzle

 a +  a = bc
 × ×  × ×  ×
 c /  d =  e
 = =  = =  =
fe - gh = gh
What is This? | How to Solve It?

Yesterday's Solution

 53 +  53 = 106
  × ×   × ×   ×
  8 /   4 =   2
  = =   = =   =
424 - 212 = 212