题目内容
计算:(1)(-1)2012-(0.5-1)×
[2-(-3)2]
(2)(-2)2+
-(-2)÷|
-
|.
| 1 |
| 3 |
(2)(-2)2+
| 22 |
| 3 |
| 1 |
| 6 |
| 1 |
| 2 |
(1)原式=1+
×
×(2-9)
=1-
×
×7
=1-
=-
;
(2)原式=4+
+2÷
=4+
+6
=10+
=
.
| 1 |
| 2 |
| 1 |
| 3 |
=1-
| 1 |
| 2 |
| 1 |
| 3 |
=1-
| 7 |
| 6 |
=-
| 1 |
| 6 |
(2)原式=4+
| 4 |
| 3 |
| 1 |
| 3 |
=4+
| 4 |
| 3 |
=10+
| 4 |
| 3 |
=
| 34 |
| 3 |
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