题目内容
计算:
+
=______;
-
=______;3
-2
+4
=______.
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 2 |
| 2 |
| 5 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 12 |
| 1 |
| 4 |
| 3 |
| 7 |
=
| 7 |
| 28 |
| 12 |
| 28 |
=
| 19 |
| 28 |
| 1 |
| 2 |
| 2 |
| 5 |
=
| 5 |
| 10 |
| 4 |
| 10 |
=
| 1 |
| 10 |
3
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 12 |
=(3
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 12 |
=1+4
| 1 |
| 12 |
=5
| 1 |
| 12 |
故答案为:
| 19 |
| 28 |
| 1 |
| 10 |
| 1 |
| 12 |
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