题目内容
直接写得数![]() | ![]() | ![]() ![]() | ![]() ![]() | ![]() ![]() |
1×![]() | ![]() ![]() | ![]() | ![]() ![]() | ![]() ![]() |
![]() ![]() | ![]() ![]() | ![]() | ![]() ![]() | 0÷![]() |
![]() | 1÷![]() | 22÷![]() | ![]() ![]() | ![]() |
解:
×15=
;
×2=
;
×
=
;
×
=
;
×
=
;
1×
=
;
×
=
;
×34=8;
×
=
;
×
=
;
×
=
;
×
=
;
÷10=
;
÷
=
; 0÷
=0;
÷4=
; 1÷
=
; 22÷
=24;
÷
=1;
÷0.4=1.
分析:(1)-(12)题,属于分数的乘法,整数可以看作分母为1的分数,把分子相乘的积做分子,分母相乘的积做分母,能约分的要约分;
(13)-(20)题,属于分数的除法,先改为乘法,然后再计算.
点评:此题考查了分数的乘法和分数的除法,注意运算法则是解答的关键.
![](http://thumb.1010pic.com/pic5/latex/4442.png)
![](http://thumb.1010pic.com/pic5/latex/11453.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb.1010pic.com/pic5/latex/15.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/602.png)
![](http://thumb.1010pic.com/pic5/latex/36.png)
![](http://thumb.1010pic.com/pic5/latex/113.png)
![](http://thumb.1010pic.com/pic5/latex/1154.png)
![](http://thumb.1010pic.com/pic5/latex/2586.png)
![](http://thumb.1010pic.com/pic5/latex/450.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/8308.png)
1×
![](http://thumb.1010pic.com/pic5/latex/3856.png)
![](http://thumb.1010pic.com/pic5/latex/3856.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/3944.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
![](http://thumb.1010pic.com/pic5/latex/2951.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/496.png)
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/3660.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/36.png)
![](http://thumb.1010pic.com/pic5/latex/3856.png)
![](http://thumb.1010pic.com/pic5/latex/155.png)
![](http://thumb.1010pic.com/pic5/latex/4457.png)
![](http://thumb.1010pic.com/pic5/latex/113.png)
![](http://thumb.1010pic.com/pic5/latex/155.png)
![](http://thumb.1010pic.com/pic5/latex/6.png)
![](http://thumb.1010pic.com/pic5/latex/14169.png)
![](http://thumb.1010pic.com/pic5/latex/2952.png)
![](http://thumb.1010pic.com/pic5/latex/1159.png)
![](http://thumb.1010pic.com/pic5/latex/5192.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/3982.png)
![](http://thumb.1010pic.com/pic5/latex/168.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
![](http://thumb.1010pic.com/pic5/latex/1261.png)
![](http://thumb.1010pic.com/pic5/latex/218269.png)
![](http://thumb.1010pic.com/pic5/latex/218269.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
分析:(1)-(12)题,属于分数的乘法,整数可以看作分母为1的分数,把分子相乘的积做分子,分母相乘的积做分母,能约分的要约分;
(13)-(20)题,属于分数的除法,先改为乘法,然后再计算.
点评:此题考查了分数的乘法和分数的除法,注意运算法则是解答的关键.
![](http://thumb2018.1010pic.com/images/loading.gif)
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