用竖式计算,打△的要验算.
28÷3=________; 33÷5=________;△325+608=________;
△583+246=________; 96+570+245=________; 189+247+368=________.
9…1 6…3 933 829 911 804
分析:根据除数是一位数的除法计算法则和整数的加法法则,直接列竖式解答即可.
解答:28÷3=9…1,
9
![](http://thumb.1010pic.com/pic5/latex/584247.png)
,
33÷5=6…3,
6
![](http://thumb.1010pic.com/pic5/latex/584249.png)
,
325+608=933,
325
![](http://thumb.1010pic.com/pic5/latex/584250.png)
,
验算:
933
![](http://thumb.1010pic.com/pic5/latex/584251.png)
,
583+246=829,
583
![](http://thumb.1010pic.com/pic5/latex/584252.png)
验算:
829
![](http://thumb.1010pic.com/pic5/latex/584253.png)
,
96+570+245=911,
96
570
![](http://thumb.1010pic.com/pic5/latex/584254.png)
,
189+247+368=804,
189
247
![](http://thumb.1010pic.com/pic5/latex/584255.png)
.
故答案为:9…1;6…3;933;829;911;804.
点评:本题属于基础运算,要求学生细心,注意数位对齐,加法的运算可以利用它的逆运算进行验算.