题目内容
计算:
(1)(3
-4
)÷2
(2)
-9
÷
-(
)-1.
(1)(3
| 12 |
| 27 |
| 3 |
(2)
| 48 |
|
| 3 |
| 2 |
|
| 3 |
(1)原式=(6
-12
)÷2
=-6
÷2
=-3;
(2)原式=4
-9×
×
-
=4
-6×
-
=4
-
-
=3
.
| 3 |
| 3 |
| 3 |
=-6
| 3 |
| 3 |
=-3;
(2)原式=4
| 3 |
| 2 |
| 3 |
|
| 1 | ||
|
=4
| 3 |
| ||
| 9 |
| ||
| 3 |
=4
| 3 |
2
| ||
| 3 |
| ||
| 3 |
=3
| 3 |
练习册系列答案
相关题目