1.25×3.2×0.25
＝1.25×0.8×4×0.25
=(1.25×0.8)×(4×0.25)
=1×1
=1
3.2*0.25*1.25用简便计算怎么做
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1.25×3.2×0.25
＝1.25×0.8×4×0.25
=(1.25×0.8)×(4×0.25)
=1×1
=1