题目内容
修路队修一条公路,第一周修了
km,第二周修了
km,第三周比前两周修的总和少
km,第三周修了多少km?
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 8 |
(
+
)-
,
=
-
+
,
=
+
,
=
+
,
=1
(km).
答:第三周修了1
km.
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 8 |
=
| 3 |
| 4 |
| 3 |
| 8 |
| 5 |
| 6 |
=
| 3 |
| 8 |
| 5 |
| 6 |
=
| 9 |
| 24 |
| 20 |
| 24 |
=1
| 5 |
| 24 |
答:第三周修了1
| 5 |
| 24 |
练习册系列答案
相关题目