题目内容
计算:
(1)4
+
-
+4
;
(2)计算:(3
-2
+
)÷2
+(
)2.
(1)4
| 5 |
| 45 |
| 8 |
| 2 |
(2)计算:(3
| 12 |
|
| 48 |
| 3 |
|
(1)原式=4
+3
-2
+4
=7
+2
;
(2)原式=(6
-
+4
)÷2
+
=
÷2
+
=
+
=5.
| 5 |
| 5 |
| 2 |
| 2 |
=7
| 5 |
| 2 |
(2)原式=(6
| 3 |
2
| ||
| 3 |
| 3 |
| 3 |
| 1 |
| 3 |
=
28
| ||
| 3 |
| 3 |
| 1 |
| 3 |
=
| 14 |
| 3 |
| 1 |
| 3 |
=5.
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