题目：
计算：(| 1 |
| 10 |
| 1 |
| 9 |
| 1 |
| 8 |
| 1 |
| 3 |
| 1 |
| 2 |
答案
解：原式=-| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 10 |
解：原式=-
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 10 |
| 1 |
| 10 |
| 1 |
| 9 |
| 1 |
| 8 |
| 1 |
| 3 |
| 1 |
| 2 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 10 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 9 |
| 10 |
| 8 |
| 9 |
| 7 |
| 8 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 10 |
（2005·潍坊）已知在数轴上a、b的对应点如图所示，则下列式子正确的是（ ）
（2003·长沙）a、b两数在数轴上的位置如图所示，下列结论中正确的是（ ）