题目内容
| 3 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
| 8 |
| 7 |
| 8 |
| 7 |
分析:分析题干,根据题意列式计算即可.
解答:解:
÷(
-
),
=
÷
,
=
×
,
=
.
故答案是:
.
| 2 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
=
| 2 |
| 5 |
| 7 |
| 20 |
=
| 2 |
| 5 |
| 20 |
| 7 |
=
| 8 |
| 7 |
故答案是:
| 8 |
| 7 |
点评:此题考查分数的四则混合运算,列式计算时注意除与除以的区别.
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| 3 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
| 8 |
| 7 |
| 8 |
| 7 |
| 2 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
| 7 |
| 20 |
| 2 |
| 5 |
| 20 |
| 7 |
| 8 |
| 7 |
| 8 |
| 7 |