题目内容
2除
的商减去4的倒数,所得的差再乘
,结果是多少?
解:根据题意可得:
(
÷2-
)×
,
=(
-
)×
,
=
×
,
=
.
答:结果是
.
分析:先计算2除
的商,再减去4的倒数,也就是减去
,所得的差再乘
即可.
点评:根据题意,先弄清运算顺序,然后再列式计算即可.
(
![](http://thumb.1010pic.com/pic5/latex/4458.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/732.png)
=(
![](http://thumb.1010pic.com/pic5/latex/35.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/732.png)
=
![](http://thumb.1010pic.com/pic5/latex/2638.png)
![](http://thumb.1010pic.com/pic5/latex/732.png)
=
![](http://thumb.1010pic.com/pic5/latex/113.png)
答:结果是
![](http://thumb.1010pic.com/pic5/latex/113.png)
分析:先计算2除
![](http://thumb.1010pic.com/pic5/latex/4458.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/732.png)
点评:根据题意,先弄清运算顺序,然后再列式计算即可.
![](http://thumb2018.1010pic.com/images/loading.gif)
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