题目内容
列竖式计算下面各题,带△号的要验算.
12.7+6.9= | 20.5-7.6= | 78×69= |
434÷7= | 906÷3= | △843÷6=验算: |
分析:根据整数、小数四则运算的计算法则,直接列竖式计算,并且能够根据乘、除法之间的关系进行验算.
解答:解:12.7+6.9=19.6;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/8ab35c8a.png)
20.5-7.6=12.9;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/e018c66c.png)
78×69=5382;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/fb32227c.png)
434÷7=62;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/52fd1ca7.png)
906÷3=302;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/d392759d.png)
843÷6=140…3.
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/900a85d5.png)
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/8ab35c8a.png)
20.5-7.6=12.9;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/e018c66c.png)
78×69=5382;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/fb32227c.png)
434÷7=62;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/52fd1ca7.png)
906÷3=302;
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/d392759d.png)
843÷6=140…3.
![](http://thumb.1010pic.com/pic3/upload/images/201302/24/900a85d5.png)
点评:此题考查的目的理解掌握整数、小数四则运算的计算法则,并且能够正确熟练地用竖式计算.
![](http://thumb2018.1010pic.com/images/loading.gif)
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