题目内容
求下列各式的值:
(1)
+(-6)-
;
(2)3
+2
-
.
(1)
| 81 |
| 3 | 27 |
(2)3
| 2 |
| 2 |
| 2 |
(1)
+(-6)-
=9-6-3
=0;
(2)3
+2
-
=(3+2-1)
=4
.
| 81 |
| 3 | 27 |
=9-6-3
=0;
(2)3
| 2 |
| 2 |
| 2 |
=(3+2-1)
| 2 |
=4
| 2 |
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题目内容
| 81 |
| 3 | 27 |
| 2 |
| 2 |
| 2 |
| 81 |
| 3 | 27 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |