题目内容
5÷
=5× ；
千米的8倍是 米．
| 2 |
| 5 |
| 3 |
| 10 |
分析：根据分数除法的运算法则可知，一个数除以一个分数，等于乘这个数分数的倒数，则5÷
=5×
；根据乘法的意义，
千米的8倍是
×8=2.4千米，即2400千米．
| 2 |
| 5 |
| 5 |
| 2 |
| 3 |
| 10 |
| 3 |
| 10 |
解答：解：5÷
=5×
×8=2.4（千米）
2.4千米=2400千米．
故答案为：
、2400．
| 2 |
| 5 |
| 5 |
| 2 |
| 3 |
| 10 |
2.4千米=2400千米．
故答案为：
| 5 |
| 2 |
点评：完成问题二是要注意前后单位不同，要进行单位换算．
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