1 3 x 1 4 )= 23 12 July 8, 2019 16 32 64 128 1 - 2 = 4 1 2 + 3 4 1 + 2 + 3 + 4 = 10 4 1/2 + 1 1/3 1 + 1 = 2 + 2 = 3