题目内容
12米增加
是______米,12米减少
是______米.
| 1 |
| 4 |
| 1 |
| 4 |
①12×(1+
),
=12×
,
=15(米);
②12×(1-
),
=12×
,
=9(米);
故答案为:15,9.
| 1 |
| 4 |
=12×
| 5 |
| 4 |
=15(米);
②12×(1-
| 1 |
| 4 |
=12×
| 3 |
| 4 |
=9(米);
故答案为:15,9.
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