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13问答网 > 1.25×1.6x0.25简便计算？

1.25×1.6x0.25简便计算？

2025-03-16 03:51:41

推荐回答（2个）

回答1：

因为1.6=0.2×8，所以原式等于1.25×0.2×8×0.25，运用乘法结合律改变运算顺序可以得到（1.25×8）×（0.2×0.25）=0.5

回答2：

1.25×（0.4×4）×0.25
=1.25×0.4×4×0.25
=0.5×1
=0.5

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