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.
练习册系列答案
相关题目