题目内容
直接写得数. 20× ![]() | ![]() ![]() | ![]() ![]() |
![]() | ![]() | ![]() ![]() |
解:20×
=8;
÷
=
;
×
=
;
÷6=
;
×12=9;
×
=
.
故答案为:8,
,
,
,9,
.
分析:根据分数乘法、除法的计算法则进行计算,注意约分.
点评:此题考查了学生分数乘除法运算的速算能力.
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/8.png)
![](http://thumb.1010pic.com/pic5/latex/597.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/15509.png)
![](http://thumb.1010pic.com/pic5/latex/8308.png)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/112.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
故答案为:8,
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/112.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
分析:根据分数乘法、除法的计算法则进行计算,注意约分.
点评:此题考查了学生分数乘除法运算的速算能力.
![](http://thumb2018.1010pic.com/images/loading.gif)
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