问题
解答题
脱式计算．
|
答案
①
| 5 |
| 9 |
| 6 |
| 25 |
| 3 |
| 10 |
=
| 5 |
| 9 |
| 6 |
| 25 |
| 10 |
| 3 |
=
| 4 |
| 9 |
②（
| 1 |
| 3 |
| 1 |
| 9 |
| 11 |
| 18 |
=
| 2 |
| 9 |
| 18 |
| 11 |
=
| 4 |
| 11 |
③
| 8 |
| 19 |
| 13 |
| 22 |
| 4 |
| 13 |
| 8 |
| 19 |
=
| 8 |
| 19 |
| 22 |
| 13 |
| 4 |
| 13 |
| 8 |
| 19 |
=
| 8 |
| 19 |
| 22 |
| 13 |
| 4 |
| 13 |
=
| 8 |
| 19 |
=
| 16 |
| 19 |
④（1-
| 5 |
| 12 |
| 2 |
| 9 |
| 5 |
| 18 |
=
| 7 |
| 12 |
=
| 7 |
| 6 |
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