Question

-

1

2

的絕對(duì)值是

 

；-

3

2

的倒數(shù)是

 

．

Answer 1

分析：由絕對(duì)值和倒數(shù)的性質(zhì)可知|-

1

2

|=

1

2

；-

3

2

的倒數(shù)等于-

2

3

．

解答：解：-

1

2

的絕對(duì)值是

1

2

；-

3

2

的倒數(shù)是-

2

3

．

點(diǎn)評(píng)：主要考查絕對(duì)值，倒數(shù)的概念及性質(zhì)．
倒數(shù)的定義：若兩個(gè)數(shù)的乘積是1，我們就稱這兩個(gè)數(shù)互為倒數(shù)．
絕對(duì)值規(guī)律總結(jié)：一個(gè)正數(shù)的絕對(duì)值是它本身；一個(gè)負(fù)數(shù)的絕對(duì)值是它的相反數(shù)；0的絕對(duì)值是0．