题目内容
计算
(1)
+(-12)×
-(-1)2;
(2)|-2|-
+(-2)-2-(
-2)0;
(3)3
-
-
.
(1)
| 16 |
| 1 |
| 2 |
(2)|-2|-
|
| 3 |
(3)3
|
| 1 | ||
|
| 12 |
(1)原式=4-6-1=-3;
(2)原式=2-
+
-1=1;
(3)原式=3×
+
-2
=
+2+
-2
=2.
(2)原式=2-
| 1 |
| 4 |
| 1 |
| 4 |
(3)原式=3×
| ||
| 3 |
| 1 | ||
2-
|
| 3 |
=
| 3 |
| 3 |
| 3 |
=2.
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