Question

計算：|

1

3

-

1

2

|+|

1

4

-

1

3

|+|

1

5

-

1

4

|+…+|

1

10

-

1

9

|．

Answer 1

分析：去掉絕對值后進行計算即可．

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

．

點評：考查了絕對值的知識，解題的關鍵是正確的取絕對值符號．