题目内容
计算:
(1)(
-
+
)×(-60).
(2)2×(-1)2012 -
÷(-
).
(3)-
[-32×(-
)2-2]+
.
(1)(
| 3 |
| 4 |
| 7 |
| 6 |
| 7 |
| 12 |
(2)2×(-1)2012 -
| 3 | 8 |
| 1 |
| 2 |
(3)-
| 3 |
| 4 |
| 2 |
| 3 |
|
(1)原式=-45+70-35
=-10;
(2)原式=2×1-2×(-2)
=2+4
=6;
(3)原式=-
×(-9×
-2)+
=
+
=5.
=-10;
(2)原式=2×1-2×(-2)
=2+4
=6;
(3)原式=-
| 3 |
| 4 |
| 4 |
| 9 |
| 1 |
| 2 |
=
| 9 |
| 2 |
| 1 |
| 2 |
=5.
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