题目内容
列竖式计算.(打★的验算)
★900÷18=
★495÷23=
634÷79=
32×40=
★900÷18=
★495÷23=
634÷79=
32×40=
分析:(1)(2)根据整数除法法则计算,并且根据被除数=除数×商进行验算;
(3)根据整数除法法则计算;
(4)根据整数乘法法则计算.
(3)根据整数除法法则计算;
(4)根据整数乘法法则计算.
解答:解:900÷18=50;
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/ced83661.png)
验算:
18
×50
495÷23=21…12;
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/cf1adce8.png)
验算:
23
×21
46
+12
634÷79=8…2;
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/421b9c19.png)
32×40=1280.
32
×40
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/ced83661.png)
验算:
18
×50
. |
900 |
495÷23=21…12;
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/cf1adce8.png)
验算:
23
×21
. |
23 |
46
. |
483 |
+12
. |
495 |
634÷79=8…2;
![](http://thumb.1010pic.com/pic3/upload/images/201312/7/421b9c19.png)
32×40=1280.
32
×40
. |
1280 |
点评:考查了整数的乘除法,关键是熟练掌握计算法则,正确进行计算.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目