题目内容
口算.
800×9=
50÷7=
1-
=
6000×2=
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/0e1b945f.png)
+
=
38+12=
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/28f84b3a.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/fc5f890d.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/5250d69b.png)
3 |
8 |
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/494b1739.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/0e1b945f.png)
2 |
7 |
3 |
7 |
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/5a6fdae6.png)
分析:本题根据整数乘法、除法、加法及分数减法与加法的运算法则计算即可.
解答:解:
800×9=7200
50÷7=7…1
1-
=
6000×2=12000
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/0e1b945f.png)
+
=
38+12=50.
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/28f84b3a.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/fc5f890d.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/5250d69b.png)
3 |
8 |
5 |
8 |
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/494b1739.png)
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/0e1b945f.png)
2 |
7 |
3 |
7 |
5 |
7 |
![](http://thumb.1010pic.com/pic3/upload/images/201401/128/5a6fdae6.png)
点评:完成此类题目要细心,在保证做题质量的同时,要注意提高做题的速度.
![](http://thumb2018.1010pic.com/images/loading.gif)
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