题目内容
计算:
(1)2
+
+4
;
(2)12
-(2
+
);
(3)5
-(3
-1
).
(1)2
| 1 |
| 3 |
| 3 |
| 2 |
| 5 |
| 6 |
(2)12
| 25 |
| 36 |
| 25 |
| 36 |
| 9 |
| 14 |
(3)5
| 1 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
(1)2
| 1 |
| 3 |
| 3 |
| 2 |
| 5 |
| 6 |
=3
| 5 |
| 6 |
| 5 |
| 6 |
=8
| 2 |
| 3 |
(2)12
| 25 |
| 36 |
| 25 |
| 36 |
| 9 |
| 14 |
=12
| 25 |
| 36 |
| 25 |
| 36 |
| 9 |
| 14 |
=10-
| 9 |
| 14 |
=9
| 5 |
| 14 |
(3)5
| 1 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
=5
| 1 |
| 8 |
| 5 |
| 12 |
=3
| 17 |
| 24 |
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