1 2 x 12 )= 100 July 8, 2019 16 32 64 128 1 2x 12 100 Extenda bond plus 1 1 2 x 12 strips 100 box 12 ×1=12 1 + 12 + 2 + 3 1 + 12 2 + 23 1 - 2 = 4
