题目内容
计算:
(1)
×
(2)
-
+
(3)
+6
-
+
(4)(
-3
)÷
.
(1)
| 2 |
| 6 |
(2)
| 27 |
| 12 |
| 48 |
(3)
| 8 |
|
| 1 | ||
|
|
(4)(
| 3a |
| 27a3 |
|
(1)原式=
=2
;
(2)原式=3
-2
+4
=5
;
(3)原式=2
+2
-
+
=
+
;
(4)原式=
÷
-3
÷
=3-27a.
| 2×6 |
=2
| 3 |
(2)原式=3
| 3 |
| 3 |
| 3 |
=5
| 3 |
(3)原式=2
| 2 |
| 3 |
| 1 |
| 2 |
| 2 |
| 1 |
| 2 |
| 3 |
=
| 3 |
| 2 |
| 2 |
| 5 |
| 2 |
| 3 |
(4)原式=
| 3a |
|
| 27a3 |
|
=3-27a.
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