计算下面各题，能简算的要简算．①（67-56）÷142②710×3+310÷13③58+37+38+47④3-32×1021-27⑤27×39÷27×39⑥28×2627．-数学
=
| 7 |
| 10 |
| 3 |
| 10 |
=（
| 7 |
| 10 |
| 3 |
| 10 |
=1×3，
=3；
③
| 5 |
| 8 |
| 3 |
| 7 |
| 3 |
| 8 |
| 4 |
| 7 |
=（
| 5 |
| 8 |
| 3 |
| 8 |
| 3 |
| 7 |
| 4 |
| 7 |
=1+1，
=2；
④3-
| 3 |
| 2 |
| 10 |
| 21 |
| 2 |
| 7 |
=3-
| 5 |
| 7 |
| 2 |
| 7 |
=3-（
| 5 |
| 7 |
| 2 |
| 7 |
=3-1，
=2；
⑤
| 2 |
| 7 |
| 3 |
| 9 |
| 2 |
| 7 |
| 3 |
| 9 |
=
| 2 |
| 7 |
| 3 |
| 9 |
| 7 |
| 2 |
| 3 |
| 9 |
=
| 2 |
| 7 |
| 7 |
| 2 |
| 3 |
| 9 |
