题目内容
×
)
解:
×
),
=![](http://thumb.1010pic.com/pic5/latex/28603.png)
÷(
-
),
=![](http://thumb.1010pic.com/pic5/latex/28603.png)
÷
,
=
+
,
=
.
分析:按分数的四则运算的顺序计算,先算乘除后算加减,有括号的先算括号里面的.
点评:此题考查了按分数的四则运算的顺序计算.
![](http://thumb.1010pic.com/pic5/latex/203617.png)
![](http://thumb.1010pic.com/pic5/latex/155.png)
=
![](http://thumb.1010pic.com/pic5/latex/28603.png)
![](http://thumb.1010pic.com/pic5/latex/177746.png)
![](http://thumb.1010pic.com/pic5/latex/1578.png)
![](http://thumb.1010pic.com/pic5/latex/4442.png)
=
![](http://thumb.1010pic.com/pic5/latex/28603.png)
![](http://thumb.1010pic.com/pic5/latex/177746.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
=
![](http://thumb.1010pic.com/pic5/latex/28603.png)
![](http://thumb.1010pic.com/pic5/latex/2405.png)
=
![](http://thumb.1010pic.com/pic5/latex/215275.png)
分析:按分数的四则运算的顺序计算,先算乘除后算加减,有括号的先算括号里面的.
点评:此题考查了按分数的四则运算的顺序计算.
![](http://thumb2018.1010pic.com/images/loading.gif)
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