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有括号的先算什么再算什么

更新时间: 2021-05-17 13:19:54     

1、有括号时,先算括号里面的,再算括号外面的;

2、有多层括号时,先算小括号里的,再算中括号里面的,,再算大括号里面的,最后算括号外面的。要是有乘方,最先算乘方。

3、在混合运算中,先算括号内的数 ,括号从小到大,如有乘方先算乘方,然后从高级到低级。

4、加法、减法、乘法、除法,统称为四则运算。其中,加法和减法叫做第一级运算;乘法和除法叫做第二级运算。

关键词: 括号 什么

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