解:十二乘六是( 72 ) ∵已知需求出十二乘六是多少 X × Y = X * Y = Z ∴十二乘六 = 12 × 6 = (10 + 2)× 6 = 10 × 6 + 2 × 6 = 60 + 12 = 72 答:十二乘六是72
72…………