题目内容
27千克增加
后,再减少
,结果还是27千克.______.
| 1 |
| 9 |
| 1 |
| 9 |
27×(1+
)×(1-
),
=27×
×
,
=30×
,
=
(千克);
<27;
故答案为:错误.
| 1 |
| 9 |
| 1 |
| 9 |
=27×
| 10 |
| 9 |
| 8 |
| 9 |
=30×
| 8 |
| 9 |
=
| 80 |
| 3 |
| 80 |
| 3 |
故答案为:错误.
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题目内容
| 1 |
| 9 |
| 1 |
| 9 |
| 1 |
| 9 |
| 1 |
| 9 |
| 10 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
| 80 |
| 3 |
| 80 |
| 3 |