(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:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/10 08:58:57
(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](/uploads/image/z/6876184-40-4.jpg?t=%280.75%C3%9742.7%2B57.3-0.573%C3%9725%29%C3%B73%C3%977972%E6%80%8E%E6%A0%B7%E5%81%9A%E7%AE%80%E4%BE%BF)
(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!
=(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!