Question

-0.125的相反數(shù)是

 

，倒數(shù)的相反數(shù)是

 

，倒數(shù)的絕對(duì)值是

 

．

Answer 1

分析：根據(jù)相反數(shù)的性質(zhì)，互為相反數(shù)的兩個(gè)數(shù)和為0；倒數(shù)的性質(zhì)，互為倒數(shù)的兩個(gè)數(shù)積為1；絕對(duì)值的定義，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．求解即可．

解答：解：a的相反數(shù)是-a，a的倒數(shù)是

1

a

，a倒數(shù)的絕對(duì)值是|

1

a

|．-0.125的相反數(shù)是0.125，-0.125=-

1

8

，所以-0.125的倒數(shù)的相反數(shù)是8，-0.125的倒數(shù)的絕對(duì)值是8．

點(diǎn)評(píng)：注意掌握相反數(shù)，倒數(shù)，絕對(duì)值的定義． a的相反數(shù)是-a，a的倒數(shù)是

1

a

；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．