题目内容
计算:
(1)
(
+
)
(2)(
-5
)
(3)(
-3
)×2
(4)(
+3
)÷
(5)
-5
+10
(1)
| 5 |
| 2 |
| 7 |
(2)(
|
| 3 |
| 6 |
(3)(
| 12 |
| 75 |
| 3 |
(4)(
| 48 |
| 15 |
| 3 |
(5)
| 40 |
|
|
(1)原式=
+
;
(2)原式=
-5
=
-15
;
(3)原式=(2
-15
)×2
=12-30
;
(4)原式=(4
+3
)÷
=4+3
;
(5)原式=2
-2
+
=3
-2
.
| 10 |
| 35 |
(2)原式=
|
| 18 |
| 4 |
| 3 |
| 2 |
(3)原式=(2
| 3 |
| 5 |
| 3 |
| 15 |
(4)原式=(4
| 3 |
| 15 |
| 3 |
| 5 |
(5)原式=2
| 10 |
| 5 |
| 10 |
| 10 |
| 5 |
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