0.125乘0.25乘3.2『巧算』急·!
问题描述：
0.125乘0.25乘3.2『巧算』
急·!
答
=0.125×0.25×(4×0.8)
=(0.125×0.8)×(0.25×4)
=0.1×1
=0.1
答
0.25×3.2×0.125
＝0.25×4×0.8×0.125
＝﹙0.25×4﹚×﹙0.8×0.125﹚
＝1×0.1
＝0.1