题目内容
计算:
(1)( -
+
-
)×( -12 );
(2)5+(-2)3×
-(-1)2012.
(1)( -
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
(2)5+(-2)3×
| 3 |
| 4 |
(1)原式=2-9+1
=-6.
(2)原式=5+(-8)×
-1
=5-6-1
=-2.
=-6.
(2)原式=5+(-8)×
| 3 |
| 4 |
=5-6-1
=-2.
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