Question

|-

1

2

|=

 

．

Answer 1

考點(diǎn)：絕對(duì)值

專題：計(jì)算題

分析：當(dāng)a是負(fù)有理數(shù)時(shí)，a的絕對(duì)值是它的相反數(shù)-a．

解答：解：|-

1

2

|=

1

2

．
故答案為：

1

2

．

點(diǎn)評(píng)：考查了絕對(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．