计算下面各题，能简算的要简算．23+16+518711+49+411+5956+14-2312+（45-23）10-57-2756-（12-13）78-（78-12）910-（16+25）-数学
| 5 |
| 18 |
=
| 15 |
| 18 |
| 5 |
| 18 |
=
| 10 |
| 9 |
（2）
| 7 |
| 11 |
| 4 |
| 9 |
| 4 |
| 11 |
| 5 |
| 9 |
=（
| 7 |
| 11 |
| 4 |
| 11 |
| 4 |
| 9 |
| 5 |
| 9 |
=1+1，
=2；
（3）
| 5 |
| 6 |
| 1 |
| 4 |
| 2 |
| 3 |
=
| 5 |
| 6 |
| 2 |
| 3 |
| 1 |
| 4 |
=
| 1 |
| 6 |
| 1 |
| 4 |
=
| 5 |
| 12 |
（4）
| 1 |
| 2 |
| 4 |
| 5 |
| 2 |
| 3 |
=
| 1 |
| 2 |
| 2 |
| 15 |
=
| 19 |
| 30 |
（5）10-
| 5 |
| 7 |
| 2 |
| 7 |
=10-（
| 5 |
| 7 |
