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Math Games, Practice Tests, and Challenges | Caribou Contests

Today's Calcrostic Puzzle

aa +  b = ac
 × -  + +  -
 b +  d = aa
 = =  = =  =
bb / aa =  b
What is This? | How to Solve It?

Yesterday's Solution

 68 × 8 = 544
  + × / /   -
 68 × 4 = 272
  = = = =   =
136 × 2 = 272