四则混合运算顺序
- 时间:2020-04-16 18:14:20
- 分类:数学世界
- 阅读:139 次
四则混合运算顺序:
1. 小数四则运算的运算顺序和整数四则运算顺序相同。
2. 分数四则运算的运算顺序和整数四则运算顺序相同。
3. 没有括号的混合运算:
同级运算从左往右依次运算;两级运算 先算乘、除法,后算加减法。
4. 有括号的混合运算:
先算小括号里面的,再算中括号里面的,最后算括号外面的。
5. 第一级运算:加法和减法叫做第一级运算。
6. 第二级运算:乘法和除法叫做第二级运算。
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