0.25×1.25×0.4×0.8怎么简便计算.

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0.25×1.25×0.4×0.8怎么简便计算.
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0.25×1.25×0.4×0.8怎么简便计算.
0.25×1.25×0.4×0.8怎么简便计算.

0.25×1.25×0.4×0.8怎么简便计算.
=0.25×0.4×1.25×0.8
=0.1×1
=0.1

(0.25*0.4)*(1.25*0.8)

心算简便
0.1