题目内容
计算:
(1)4
+
-
+4
(2)(3
+
-4
)÷
(3)
×
÷
(4)8
-
+
.
(1)4
| 5 |
| 45 |
| 8 |
| 2 |
(2)(3
| 8 |
| 1 |
| 5 |
| 50 |
|
| 32 |
(3)
| 75 |
| ||
| 3 |
| 1 | ||
|
(4)8
|
| 9a |
| 1 |
| a |
| a3 |
(1)原式=4
+3
-2
+4
=7
+2
;
(2)原式=(6
+
-2
)÷4
=5
÷4
=
;
(3)原式=5
×
×
=5
×
×
=10;
(3)原式=4
-3
+
=2
.
| 5 |
| 5 |
| 2 |
| 2 |
| 5 |
| 2 |
(2)原式=(6
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 5 |
| 4 |
(3)原式=5
| 3 |
| ||
| 3 |
| 2 |
| 3 |
| ||||
| 3 |
| 2 |
(3)原式=4
| a |
| a |
| a |
| a |
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