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有小括号和中括号的脱式计算

更新时间: 2021-05-28 22:44:15     

1、有小括号和中括号的脱式计算,先计算小括号,再计算中括号。

2、75÷[138÷(100-54)]=75÷(138÷46)=75÷3=25。

3、5.4÷[2.6×(3.7-2.9)+0.62]=5.4÷(2.6×0.8+0.62)=5.4÷(2.08+0.62)=5.4÷2.7=2

关键词: 括号 计算

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