计算下面各题，能简算的要用简便方法计算．2008-900÷15×120.5×（1.6+4.2÷0.3）35+411+25+711（34-34×56）÷98512÷[38×（79-12）]45×（89+215-35）-数学
| 7 |
| 11 |
=1+1，
=2；
（4）（
| 3 |
| 4 |
| 3 |
| 4 |
| 5 |
| 6 |
| 9 |
| 8 |
=[（1-
| 5 |
| 6 |
| 3 |
| 4 |
| 9 |
| 8 |
=[
| 1 |
| 6 |
| 3 |
| 4 |
| 8 |
| 9 |
=
| 1 |
| 8 |
| 8 |
| 9 |
=
| 1 |
| 9 |
（5）
| 5 |
| 12 |
| 3 |
| 8 |
| 7 |
| 9 |
| 1 |
| 2 |
=
| 5 |
| 12 |
| 3 |
| 8 |
| 5 |
| 18 |
=
| 5 |
| 12 |
| 48 |
| 5 |
=4；
（6）45×（
| 8 |
| 9 |
