5 2 x 10 8 x 5 4 July 8, 2019 16 32 64 128 5 5 8 x 2 2 10 x 1 4 12 10 5 x 4 2 x 5 8 x 2 100 5 x 5 x 5 x 5 x 5 2 5 x - 10 = 5 9 5 x 5 x 5