题目内容
竖式计算
1.75÷35= | 0.53×2.7= | 0.02÷0.25= | 6.23×4.2(得数保留两位小数) |
分析:本题根据小数除法与乘法的运算法则列竖式计算即可.
解答:解:1.75÷35=0.05;
0.53×2.7=1.431;
0.02÷0.25=0.8;
6.23×4.2≈26.17.
|
1 7 5 |
0 |
0.53×2.7=1.431;
|
. |
3 7 1 |
1 0 6 |
1.4 3 1 |
0.02÷0.25=0.8;
|
2 0 |
0 |
6.23×4.2≈26.17.
|
. |
1 2 4 6 |
2 4 9 2 |
2 6.1 6 6 |
点评:在按要求保留相应位数取近似值时,可根据四舍五入的原则进行取值.
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