1.25×3.2×0.25简便方法是什么

首先把3.2分成0.8*4

1.25乘以0.8等于1

而4*0.25也等于1

所以1.25×3.2×0.25=1

1.25×3.2×0.25
＝1.25×0.8×4×0.25
=(1.25×0.8)×(4×0.25)
=1×1
=1

用分数相乘

1.25=5/4
3.2=16/5
0.25=1/4

原式=5/4*16/5*1/4=1

1.25*3.2*0.25
=1.25*(0.8*4)*0.25
=(1.25*0.8)*(4*0.25)
=1*1
=1

1.25×3.2×0.25=(1.25*8)*(0.4*0.25)=10