Question

2.5乘0.64乘1.25（简便计算）？

点5×0点64×1点二五简便计算

Answer 1

根据题意，这道题用到的简便计算方法是乘法分配律和乘法结合律，原式=2.5*4*0.2*0.8*1.25=10*0.2*1=2。

Answer 2

简便计算
2.5×0.64×1.25
＝2.5×0.8×0.8×1.25
＝2×1
＝2

Answer 3

2.5*0.8*0.8*1.25=（2.5*0.8）*（0.8*1.25）=2*1=2

Answer 4

2.5*0.64*1.25
=2.5*（0.6+0.04）*1.25
=（1.5+0.1）*1.25
=1.6*1.25
=（1+0.6）*1.25
=1.25+0.75
=2

Answer 5

2.5x0.64x1.25
=2.5x0.4x0.2x8x1.25
=2.5x0.4x1.25x8x0.2
=1x10x0.2
=2