题目内容
计算
(1)(2
-1)(
+1)
(2)
+
-4
(3)(-
)-2-(
-1)0-|-2|+
(4)(
)-1-(
-2)0+
-(-2)2×
.
(1)(2
| 3 |
| 3 |
(2)
| 2 | ||
|
| 18 |
|
(3)(-
| 1 |
| 3 |
| 3 |
| 4 |
(4)(
| 1 |
| 3 |
| 5 |
| 18 |
| 2 |
(1)原式=6+2
-
-1=5+
;
(2)原式=2(
+1)+3
-2
=2+3
;
(3)原式=9-1-2+2=8;
(4)原式=3-1+3
-4
=2-
.
| 3 |
| 3 |
| 3 |
(2)原式=2(
| 2 |
| 2 |
| 2 |
| 2 |
(3)原式=9-1-2+2=8;
(4)原式=3-1+3
| 2 |
| 2 |
| 2 |
练习册系列答案
相关题目