题目内容
一根绳子,第一次用去
米,第二次用去
,还剩下
米.这根绳子全长多少米?
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
(
+
)÷(1-
)
=
÷
,
=
(米).
答:这根绳子全长是
米.
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
=
| 7 |
| 5 |
| 3 |
| 10 |
=
| 14 |
| 3 |
答:这根绳子全长是
| 14 |
| 3 |
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题目内容
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 5 |
| 3 |
| 10 |
| 14 |
| 3 |
| 14 |
| 3 |