题目内容
81
×
÷
(利用幂的运算性质计算)
| 1 |
| 3 |
| 27 |
| 3 | 3 |
原式=
×3
÷
,
=3
×3
÷
,
=3
×3
×
.
=9
.
| 3 | 81 |
| 3 |
| 3 | 3 |
=3
| 3 | 3 |
| 3 |
| 3 | 3 |
=3
| 3 | 3 |
| 3 |
| 1 | |||
|
=9
| 3 |
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题目内容
| 1 |
| 3 |
| 27 |
| 3 | 3 |
| 3 | 81 |
| 3 |
| 3 | 3 |
| 3 | 3 |
| 3 |
| 3 | 3 |
| 3 | 3 |
| 3 |
| 1 | |||
|
| 3 |