问题
解答题
|
答案
（1）56×（
| 3 |
| 7 |
| 3 |
| 8 |
=56×
| 3 |
| 7 |
| 3 |
| 8 |
=24-21，
=3；
（2）9.75-3.42-5.58，
=9.75-（3.42+5.58），
=9.75-9，
=0.75；
（3）125×0.25×3.2，
=125×0.25×4×0.8，
=125×0.8×0.25×4，
=100×1，
=100；
（4）（
| 3 |
| 5 |
| 1 |
| 4 |
| 4 |
| 7 |
=
| 3 |
| 5 |
| 4 |
| 7 |
| 1 |
| 4 |
| 4 |
| 7 |
=
| 12 |
| 35 |
| 1 |
| 7 |
=
| 12 |
| 35 |
| 5 |
| 35 |
=
| 1 |
| 5 |
（5）
| 3 |
| 8 |
| 6 |
| 7 |
| 6 |
| 7 |
=
| 3 |
| 8 |
| 6 |
| 7 |
| 6 |
| 7 |
| 1 |
| 8 |
=
| 6 |
| 7 |
| 3 |
| 8 |
| 1 |
| 8 |
=
| 6 |
| 7 |
| 1 |
| 2 |
=
| 3 |
| 7 |
（6）
| 3 |
| 4 |
| 1 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 4 |
| 11 |
| 3 |
=
| 11 |
| 12 |