用合理的方法计算：（1）435+7512+25；（2）81117-3815-2715；（3）9512-(8512-7619)；（4）11917-81225+51225；（5）5212×23+5114×45+5016×67；（6）(2512+358+456)÷(2112+318+416)．-数学
=8
| 6 |
| 19 |
（4）11
| 9 |
| 17 |
| 12 |
| 25 |
| 12 |
| 25 |
=11
| 9 |
| 17 |
| 12 |
| 25 |
| 12 |
| 25 |
=11
| 9 |
| 17 |
=8
| 9 |
| 17 |
（5）52
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 6 |
| 6 |
| 7 |
=（51+
| 3 |
| 2 |
| 2 |
| 3 |
| 5 |
| 4 |
| 4 |
| 5 |
| 7 |
| 6 |
| 6 |
| 7 |
=51×
| 2 |
| 3 |
| 3 |
| 2 |
| 2 |
| 3 |
