Question

-2的相反數(shù)為________，倒數(shù)為________，絕對(duì)值為________．

Answer 1

2    -    2
分析：利用相反數(shù)，絕對(duì)值，倒數(shù)的概念及性質(zhì)解題．
解答：-2的相反數(shù)為2，倒數(shù)為-，絕對(duì)值為2．
點(diǎn)評(píng)：主要考查相反數(shù)，絕對(duì)值，倒數(shù)的概念及性質(zhì)．
相反數(shù)的定義：只有符號(hào)不同的兩個(gè)數(shù)互為相反數(shù)，0的相反數(shù)是0；
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．