题目内容
列竖式计算下面各题.
4.98×2.5= | 0.64×0.15= | 7.06×2.4=(得数保留一位小数) |
50.96÷6.5= | 2.75÷7.5= | 6.27÷3.5=(结果保留两位小数) |
分析:(1)、(2)、(3)运用小数的乘法的计算法则进行计算即可,第(3)题运用四舍五入的方法保留一位小数.
(4)、(5)、(6)运用小数除法的计算法则进行计算即可,第(6)题除到千分位后运用四舍五入的方法精确到百分位即可.
(4)、(5)、(6)运用小数除法的计算法则进行计算即可,第(6)题除到千分位后运用四舍五入的方法精确到百分位即可.
解答:解:(1)4.98×2.5=12.45;
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/aae53fc3.png)
(2)0.64×0.15=0.096;
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/127525ee.png)
(3)7.06×2.4≈16.9;(得数保留一位小数);
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/e4647153.png)
(4)50.96÷6.5=7.84;
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/a5b07cfd.png)
(5)2.75÷7.5≈0.37;
![](http://thumb.1010pic.com/pic3/upload/images/201301/40/938f925c.png)
(6)6.27÷3.5≈1.79;(结果保留两位小数)
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/4d72b860.png)
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/aae53fc3.png)
(2)0.64×0.15=0.096;
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/127525ee.png)
(3)7.06×2.4≈16.9;(得数保留一位小数);
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/e4647153.png)
(4)50.96÷6.5=7.84;
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/a5b07cfd.png)
(5)2.75÷7.5≈0.37;
![](http://thumb.1010pic.com/pic3/upload/images/201301/40/938f925c.png)
(6)6.27÷3.5≈1.79;(结果保留两位小数)
![](http://thumb.1010pic.com/pic3/upload/images/201301/39/4d72b860.png)
点评:本题运用小数的乘除法的计算法则进行计算即可,运用四舍五入的方法保留小数.
![](http://thumb2018.1010pic.com/images/loading.gif)
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