Question

12.5x2.4一0.25x24简便方法

Answer 1

12.5*2.4-2.5*2.4
=2.4*（12.5-2.5）
=24

Answer 2

2.4*（12.5-0.25*10）=2.4*10=24

Answer 3

12.5*2.4-0.25*24
=1.25*24-0.25*24
=(1.25-0.25)*24
=24

Answer 4

简便算法就是凑4x25
8x125

Answer 5

原式＝12.5×8×0.3-0.25×4×6
＝30-6
＝24