题目内容
计算
+
+
+…+
的结果是
______.
| 1 |
| 2×4 |
| 1 |
| 4×6 |
| 1 |
| 6×8 |
| 1 |
| 2 006×2 008 |
原式=
×[(
-
)+(
-
)+(
-
)+…+(
-
)],
=
×(
-
),
=
.
故答案是:
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 2006 |
| 1 |
| 2008 |
=
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2008 |
=
| 1003 |
| 4016 |
故答案是:
| 1003 |
| 4016 |
练习册系列答案
相关题目