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: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,
∴-
的相反數(shù)是
,
根據(jù)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,
∴-
絕對(duì)值是
,
根據(jù)倒數(shù)的性質(zhì),互為倒數(shù)的兩個(gè)數(shù)積為1,
∴-
的倒數(shù)是-
,
故答案為:
,
,-
.
點(diǎn)評(píng):本題主要考查了絕對(duì)值、相反數(shù)、倒數(shù)的定義,a的相反數(shù)是-a,a的倒數(shù)是
,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,難度適中.