题目：
用“＞”或“＜”符号填空：①-2
＜
＜
5 ②-|-
| 2 |
| 7 |
＜
＜
|+| 3 |
| 8 |
③-
| 7 |
| 10 |
＜
＜
-| 3 |
| 10 |
答案
＜
＜
＜
解：①-2＜5；
②∵-|-
| 2 |
| 7 |
| 2 |
| 7 |
| 3 |
| 8 |
| 3 |
| 8 |
∴-|-
| 2 |
| 7 |
| 3 |
| 8 |
③∵
| 7 |
| 10 |
| 3 |
| 10 |
∴-
| 7 |
| 10 |
| 3 |
| 10 |
故答案为：＜，＜，＜．
| 2 |
| 7 |
| 3 |
| 8 |
| 7 |
| 10 |
| 3 |
| 10 |
| 2 |
| 7 |
| 2 |
| 7 |
| 3 |
| 8 |
| 3 |
| 8 |
| 2 |
| 7 |
| 3 |
| 8 |
| 7 |
| 10 |
| 3 |
| 10 |
| 7 |
| 10 |
| 3 |
| 10 |
