（12+13）×24-12×12（1-25÷7）÷（3.6×49+13）8513-5÷9-19×13（3712+615+42.5）÷45312+318÷0.625+13×14[3-（8.25-513）]÷0.9+0.1．-数学
=12+8-6，
=20-6，
=14；
（2）（1-
| 2 |
| 5 |
| 4 |
| 9 |
| 1 |
| 3 |
=（1-
| 2 |
| 35 |
| 1 |
| 3 |
=
| 33 |
| 35 |
| 29 |
| 15 |
=
| 99 |
| 203 |
（3）8
| 5 |
| 13 |
| 1 |
| 9 |
=8
| 5 |
| 13 |
| 5 |
| 9 |
| 13 |
| 9 |
=8
| 5 |
| 13 |
| 5 |
| 9 |
| 13 |
| 9 |
=8
| 5 |
| 13 |
=6
| 5 |
| 13 |
（4）（37
| 1 |
| 2 |
| 1 |
| 5 |
| 4 |
| 5 |
=（37
| 1 |
| 2 |
| 1 |
| 5 |
| 4 |
| 5 |
=（80+
