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(0.75×42.7+57.3-0.573×25)÷3×7972怎样做简便

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/10 21:31:15
(0.75×42.7+57.3-0.573×25)÷3×7972怎样做简便
(0.75×42.7+57.3-0.573×25)÷3×7972怎样做简便
(0.75×42.7+57.3-0.573×25)÷3×7972
=(0.75×42.7+57.3-57.3×0.25)÷3×7972
=【0.75×42.7+57.3(1-0.25)】÷3×7972
=【0.75×42.7+57.3×0.75】÷3×7972
=【0.75(42.7+57.3)】÷3×7972
=0.75×100÷3×7972
=25×7972=199300
再问: 太给力了,你的回答完美解决了我的问题!