题目内容
| 2 |
| 5 |
| 1 |
| 2 |
(2)计算:|
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 4 |
| 1 |
| 100 |
| 1 |
| 99 |
分析:(1)把所给的数按分类填入图中;(2)第n个绝对值可化为
-
.
| 1 |
| n+1 |
| 1 |
| n+2 |
解答:解:(1)-
=-0.44
=4.5;

(2)原式=
-
=
.
| 2 |
| 5 |
| 1 |
| 2 |
(2)原式=
| 1 |
| 2 |
| 1 |
| 100 |
| 49 |
| 100 |
点评:注意去掉每项绝对值后,结果要为正数.
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