Math challenges week 3 online puzzle

3x3 - 9 pieces5x5 - 25 pieces8x7 - 56 pieces9x8 - 72 pieces10x9 - 90 pieces11x10 - 110 pieces12x11 - 132 pieces13x12 - 156 pieces15x14 - 210 pieces23x21 - 483 pieces33x30 - 990 pieces Start a new game

By arranging these puzzles, you show us that they are worth showing to more visitors. Until they become more popular, they are partially hidden.

25

2