题目内容
列竖式计算(第3、4小题要验算) 276+384= |
517-348= |
259+148= |
507-348= |
分析:根据整数加减法竖式计算的方法进行计算即可;加法的验算一般用减法;减法的验算一般用加法.
解答:解:276+384=660,
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/99c0b239.png)
517-348=169,
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/2f52d231.png)
259+148=407,
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/74a670c7.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/767c855b.png)
507-348=159.
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/0a882436.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/73582cb9.png)
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/99c0b239.png)
517-348=169,
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/2f52d231.png)
259+148=407,
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/74a670c7.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/767c855b.png)
507-348=159.
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/0a882436.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201210/62/73582cb9.png)
点评:本题主要考查整数加减法的笔算,根据各自的计算法则进行计算即可,注意验算的方法的选择.
![](http://thumb2018.1010pic.com/images/loading.gif)
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