题目内容
认真思考，求下列式子的值．
|
-
|+|
-
|+|
-
|．
|
| 1 |
| 2008 |
| 1 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2010 |
| 1 |
| 2010 |
| 1 |
| 2011 |
分析：根据绝对值的性质直接去绝对值进而得出答案．
解答：解：原式=
-
+
-
+
-
=
-
=
．
| 1 |
| 2008 |
| 1 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2010 |
| 1 |
| 2010 |
| 1 |
| 2011 |
=
| 1 |
| 2008 |
| 1 |
| 2011 |
=
| 3 |
| 4038088 |
点评：此题主要考查了绝对值的性质，正确取绝对值是解题关键．
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