题目内容
计算:
(1)3(
+
)-4(
-
)
(2)(
+
)÷
(3)
+
+3
(4)(3
-2
)(3
+2
)
(1)3(
| 3 |
| 2 |
| 2 |
| 27 |
(2)(
| 48 |
| 6 |
| 27 |
(3)
| 48 |
| 12 |
| 3 |
(4)(3
| 2 |
| 3 |
| 2 |
| 3 |
(1)原式=3
+3
-4
+12
=15
-
;
(2)原式=
+
=
;
(3)原式=4
+2
+3
=9
;
(4)原式=18-12=6.
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
(2)原式=
| 4 |
| 3 |
| ||
| 3 |
4+
| ||
| 3 |
(3)原式=4
| 3 |
| 3 |
| 3 |
| 3 |
(4)原式=18-12=6.
练习册系列答案
相关题目