25×2.64+12.5×0.726+0.125.

发布时间:2020-07-31 07:53:13

25×2.64+12.5×0.726+0.125.

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解:25×2.64+12.5×0.726+0.125,
=12.5×5.28+12.5×0.726+12.5×0.01,
=12.5×(5.28+0.726+0.01),
=12.5×6+12.5×0.016,
=75+12.5×8×0.002,
=75+0.2,
=75.2.

解析分析:化25×2.64=12.5×5.28,0.125=12.5×0.01,再运用乘法分配律展开算式,最后化0.016=8×0.002解答.

点评:本题主要考查学生运用乘法分配律、乘法结合律解决问题的能力.
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