=4.575+13.25-7.13
=17.825-7.13
=10.695；
②
| 1 |
| 20043?2003×(20042+2005) |
=
| 1 |
| 20042×2004?2003×20042?2003×2005 |
=
| 1 |
| 20042×(2004?2003)?2003×2005 |
=
| 1 |
| 20042?2003×2005 |
=
| 1 |
| 20042?2003×(2004+1) |
=
| 1 |
| 20042?2003×2004?2003 |
=
| 1 |
| 2004×(2004?2003)?2003 |
=
| 1 |
| 2004?2003 |
=1．
故答案為：10.695，1．