Question

-

1

2

的絕對(duì)值是（　�。�

• A、-2
• B、-

  1

  2

• C、2
• D、

  1

  2

Answer 1

分析：由-

1

2

小于0，根據(jù)絕對(duì)值的代數(shù)意義：負(fù)數(shù)的絕對(duì)值等于它的相反數(shù)即可得到結(jié)果．

解答：解：∵-

1

2

＜0，
∴|-

1

2

|=-（-

1

2

）=

1

2

．
故選D

點(diǎn)評(píng)：此題考查了絕對(duì)值的代數(shù)意義：正數(shù)的絕對(duì)值等于它本身；負(fù)數(shù)的絕對(duì)值等于它的相反數(shù)；0的絕對(duì)值還是0，掌握絕對(duì)值的代數(shù)意義是解本題的關(guān)鍵．