题目内容
计算:
(1)
-
-(-
)+(-
)
(2)(-1)2012-[(-3)×(-
)2-2
÷(-2)3].
(1)
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 3 |
| 5 |
| 6 |
(2)(-1)2012-[(-3)×(-
| 2 |
| 3 |
| 2 |
| 3 |
(1)原式=
-
+
-
=(
+
)-(
+
)=1-
=-
;
(2)原式=1-(-3×
+
×
)=1-(-
+
)=1-(-1)=1+1=2.
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 3 |
| 5 |
| 6 |
| 2 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 5 |
| 6 |
| 13 |
| 12 |
| 1 |
| 12 |
(2)原式=1-(-3×
| 4 |
| 9 |
| 8 |
| 3 |
| 1 |
| 8 |
| 4 |
| 3 |
| 1 |
| 3 |
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