题目内容
一杯牛奶,第一次喝了
,第二次喝了剩下的
,还剩下这杯牛奶的几分之几?
| 1 |
| 3 |
| 1 |
| 3 |
1-
-(1-
)×
=
-
×
,
=
-
,
=
.
答:还剩下这杯牛奶的
.
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
=
| 2 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
=
| 2 |
| 3 |
| 2 |
| 9 |
=
| 4 |
| 9 |
答:还剩下这杯牛奶的
| 4 |
| 9 |
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