问题:
计算:
(1)(
3
4
-
7
6
+
7
12
)×(-60).
(2)2×(-1) 2012 -
3
8
÷(-
1
2
).
(3)-
3
4
[-3 2×(-
2
3
) 2-2]+
1
4
.
计算:
(1)(
-
+
)×(-60).
(2)2×(-1) 2012 -
÷(-
).
(3)-
[-3 2×(-
) 2-2]+
.
(1)(
3 |
4 |
7 |
6 |
7 |
12 |
(2)2×(-1) 2012 -
3 | 8 |
1 |
2 |
(3)-
3 |
4 |
2 |
3 |
|
参考答案: