题目内容
计算:
(1)
+
-
(2)
-
(3)
-
+
(4)(
-
)÷(
-
).
(1)
18 |
72 |
32 |
(2)
4x |
9x |
(3)
27 |
12 |
|
(4)(
12 |
8 |
48 |
32 |
(1)原式=3
+6
-4
=5
;
(2)原式=2
-3
=-
;
(3)原式=3
-2
+
=
;
(4)原式=(2
-2
)÷(4
-4
)=
.
2 |
2 |
2 |
2 |
(2)原式=2
x |
x |
x |
(3)原式=3
3 |
3 |
2
| ||
3 |
5
| ||
3 |
(4)原式=(2
3 |
2 |
3 |
2 |
1 |
2 |
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