Question

计算：|

1

3

-

1

2

|+|

1

4

-

1

3

|+|

1

5

-

1

4

|+…+|

1

10

-

1

9

|．

Answer 1

分析：去掉绝对值后进行计算即可．

解答：解：|

1

3

-

1

2

|+|

1

4

-

1

3

|+|

1

5

-

1

4

|+…+|

1

10

-

1

9

|
=

1

2

-

1

3

+

1

3

-

1

4

+

1

4

-

1

5

+…+

1

9

-

1

10

=

1

2

-

1

10

=

2

5

．

点评：考查了绝对值的知识，解题的关键是正确的取绝对值符号．