题目内容
列竖式计算并验算.
(1)512.8+67.82
(2)91.3-9.78.
(1)512.8+67.82
(2)91.3-9.78.
分析:根据小数加减法的计算方法进行计算.注意验算方法的选择.
解答:解:
(1)512.8+67.82=580.62
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/b60b8e60.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/fd03cfd3.png)
(2)91.3-9.78=81.52
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/005b6a57.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/089f2df0.png)
(1)512.8+67.82=580.62
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/b60b8e60.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/fd03cfd3.png)
(2)91.3-9.78=81.52
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/005b6a57.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201309/24/089f2df0.png)
点评:考查了小数加减法的笔算,根据各自的计算方法进行计算.注意验算方法的选择.
![](http://thumb2018.1010pic.com/images/loading.gif)
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