用自己喜欢的方法计算：57﹢56﹢27﹢16（56﹢58）×242581×798035﹢12×452-613÷926-23[1-（14﹢38）]÷14．-数学
=
| 5 |
| 6 |
| 24 |
| 25 |
| 5 |
| 8 |
| 24 |
| 25 |
=
| 4 |
| 5 |
| 3 |
| 5 |
=
| 7 |
| 5 |
（3）81×
| 79 |
| 80 |
=（80+1）×
| 79 |
| 80 |
=80×
| 79 |
| 80 |
| 79 |
| 80 |
=79+
| 79 |
| 80 |
=79
| 79 |
| 80 |
（4）
| 3 |
| 5 |
| 1 |
| 2 |
| 4 |
| 5 |
=
| 3 |
| 5 |
| 2 |
| 5 |
=1；
（5）2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=2-（
| 4 |
| 3 |
| 2 |
| 3 |
=2-2，
=0；
（6）[1-（
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
| 1 |
| 4 |
=
