题目内容
计算:
(1)
-
+
;
(2)2
+4
-3
-
.
(1)
| 18 |
| 8 |
| 50 |
(2)2
| 12 |
|
| 48 |
|
(1)原式=3
-2
+5
=6
;
(2)原式=4
+
-12
-
=-8
.
| 2 |
| 2 |
| 2 |
| 2 |
(2)原式=4
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
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题目内容
| 18 |
| 8 |
| 50 |
| 12 |
|
| 48 |
|
| 2 |
| 2 |
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |