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1.82×1.25+0.18×0.125怎么简便算
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人气:413 ℃ 时间:2019-12-13 04:18:56
解答
1.82×1.25+0.18×0.125
=1.82×1.25+0.018×1.25
=1.25×(1.82+0.018)
=1.25×1.838
=1.25×8×0.22975
=2.2975
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