题目内容
(-125| 5 | 7 |
分析:将原式变形为(125+
)×
,再用分配律进行计算即可.
| 5 |
| 7 |
| 1 |
| 5 |
解答:解:(-125
)÷(-5),
=(125+
)×
,
=125×
+
×
,
=25+
,
=25
.
| 5 |
| 7 |
=(125+
| 5 |
| 7 |
| 1 |
| 5 |
=125×
| 1 |
| 5 |
| 5 |
| 7 |
| 1 |
| 5 |
=25+
| 1 |
| 7 |
=25
| 1 |
| 7 |
点评:本题考查了有理数的除法,是基础知识比较简单.
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