题目内容
| 2 |
| 5 |
分析:先求得
的倒数是1÷
,再加上
即可.
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
解答:解:1÷
+
=
+
=
;
故选:C.
| 2 |
| 5 |
| 2 |
| 5 |
=
| 5 |
| 2 |
| 2 |
| 5 |
=
| 29 |
| 10 |
故选:C.
点评:此题主要考查倒数的意义:乘积是1的两个数互为倒数.
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题目内容
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 5 |
| 2 |
| 2 |
| 5 |
| 29 |
| 10 |