题目内容
列竖式计算(第3、4小题要验算)
857+476= | 304-195= | 259+148=验算: | 410-207=验算: |
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:
857+476=1333
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/82f1a748.png)
304-195=109
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/8b017df9.png)
259+148=407
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/f8f35c9c.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/89820b12.png)
410-207=203
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/76858263.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/647d1c43.png)
857+476=1333
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/82f1a748.png)
304-195=109
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/8b017df9.png)
259+148=407
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/f8f35c9c.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/89820b12.png)
410-207=203
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/76858263.png)
验算:
![](http://thumb.1010pic.com/pic3/upload/images/201212/90/647d1c43.png)
点评:本题主要考查整数加减法的笔算,根据各自的计算方法进行计算即可;注意验算方法的选择.
![](http://thumb2018.1010pic.com/images/loading.gif)
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列竖式计算(第3、4小题要验算)
857+476= | 304-195= | 259+148=验算: | 410-207=验算: |