题目内容
列竖式计算,带*的要验算.
40-18.8=
35.2+13.9=
*415÷4=
*49×78=
40-18.8=
35.2+13.9=
*415÷4=
*49×78=
考点:小数的加法和减法,小数乘法,小数除法
专题:计算题
分析:根据四则运算的计算法则进行计算即可求解.注意带*的要验算.
解答:
解:40-18.8=21.2
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/7137b549.png)
35.2+13.9=49.1
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/d25f22b3.png)
*415÷4=103…3
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/6b5ee64c.png)
*49×78=3822
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/7137b549.png)
35.2+13.9=49.1
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/d25f22b3.png)
*415÷4=103…3
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/6b5ee64c.png)
*49×78=3822
![](http://thumb.1010pic.com/pic3/upload/images/201409/64/705182c3.png)
点评:考查了四则运算,关键是熟练掌握计算法则正确进行计算.
![](http://thumb2018.1010pic.com/images/loading.gif)
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