题目：
计算：（1）（-7）×（-
| 4 |
| 3 |
| 5 |
| 14 |
（2）9
| 2 |
| 5 |
（3）（
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
答案
解：（1）原式=7×| 4 |
| 3 |
| 5 |
| 14 |
| 10 |
| 3 |
（2）原式=
| 47 |
| 5 |
（3）原式=
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
解：（1）原式=7×
| 4 |
| 3 |
| 5 |
| 14 |
| 10 |
| 3 |
（2）原式=
| 47 |
| 5 |
（3）原式=
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
| 4 |
| 3 |
| 5 |
| 14 |
| 2 |
| 5 |
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
| 4 |
| 3 |
| 5 |
| 14 |
| 10 |
| 3 |
| 47 |
| 5 |
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
| 4 |
| 3 |
| 5 |
| 14 |
| 10 |
| 3 |
| 47 |
| 5 |
| 7 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 18 |
（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（ ）