题目内容
(1)计算:3
+
-4
;
(2)计算:
-2cos45°+(7-
)0-(
)-1.
| 18 |
| 1 |
| 5 |
| 50 |
|
(2)计算:
| 8 |
| π |
| 2 |
| 1 |
| 2 |
(1)原式=9
+
-2
=8
;
(2)原式=2
-2×
+1-2=2
-
+1-2=
-1.
| 2 |
| 2 |
| 2 |
| 2 |
(2)原式=2
| 2 |
| ||
| 2 |
| 2 |
| 2 |
| 2 |
练习册系列答案
相关题目
题目内容
| 18 |
| 1 |
| 5 |
| 50 |
|
| 8 |
| π |
| 2 |
| 1 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| ||
| 2 |
| 2 |
| 2 |
| 2 |