脱式计算，注意使计算简便16+34×23÷2（34+12-712）×241724×34+1724÷42-613÷926-23[4-（34-38）]×429．-数学
| 1 |
| 2 |
| 7 |
| 12 |
=18+12-14，
=30-14，
=16；
（3）
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
| 1 |
| 4 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 17 |
| 24 |
=
| 17 |
| 24 |
（4）2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 6 |
| 13 |
| 26 |
| 9 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=2-（
| 4 |
| 3 |
| 2 |
| 3 |
=2-2，
=0；
（5）[4-（
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
=[4-
| 3 |
| 8 |
| 4 |
| 29 |
=3
| 5 |
| 8 |
