题目内容
计算:
÷
×7÷
.
| 1 |
| 7 |
| 1 |
| 34 |
| 17 |
| 2 |
分析:把除法改为乘法,按照分数的连乘约分计算即可.
解答:解:
÷
×7÷
=
×34×7×
=4.
| 1 |
| 7 |
| 1 |
| 34 |
| 17 |
| 2 |
=
| 1 |
| 7 |
| 2 |
| 17 |
=4.
点评:乘除混合运算关键是把除法改为乘法,进一步约分计算.
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题目内容
| 1 |
| 7 |
| 1 |
| 34 |
| 17 |
| 2 |
| 1 |
| 7 |
| 1 |
| 34 |
| 17 |
| 2 |
| 1 |
| 7 |
| 2 |
| 17 |