题目内容
列竖式计算下面各题.
| 235×7.6= 1786 1786 ; |
2.05×2.4= 4.92 4.92 ; |
| 92÷3.2= 28.75 28.75 ; |
8.6÷1.03≈ 8.35 8.35 .(得数保留两位小数) |
分析:本题根据小数乘法与除法的运算法则列竖式计算即可.
解答:解:235×7.6=1786;
2.05×2.4=4.92;
92÷3.2=28.75;
8.6÷1.03≈8.35.
故答案为:1786,4.92,28.75,8.35.
|
. |
| 1 4 1 0 |
| 1 6 4 5 |
| 1 7 8 6.0 |
2.05×2.4=4.92;
|
. |
| 8 2 0 |
| 4 1 0 |
| 4.9 2 0 |
92÷3.2=28.75;
|
| 6 4 |
| 2 8 0 |
| 2 5 6 |
| 2 4 0 |
| 2 2 4 |
| 1 6 0 |
| 1 6 0 |
| 0 |
8.6÷1.03≈8.35.
|
| 8 2 4 |
| 3 6 0 |
| 3 0 9 |
| 5 1 0 |
| 4 1 2 |
| 9 8 0 |
| 9 2 7 |
| 5 3 |
故答案为:1786,4.92,28.75,8.35.
点评:在按要求位数取近似值时,可根据四舍五入的原则进行取值.
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