Question

-3的相反數(shù)的倒數(shù)是

 

，絕對(duì)值等于它本身的數(shù)是

 

．

Answer 1

分析：-3的相反數(shù)為3，3的倒數(shù)是

1

3

；
正數(shù)的絕對(duì)值是它本身，0的絕對(duì)值是本身，因此絕對(duì)值等于它本身的數(shù)是非負(fù)數(shù)．

解答：解：-3的相反數(shù)的倒數(shù)是

1

3

，絕對(duì)值等于它本身的數(shù)是非負(fù)數(shù)．

點(diǎn)評(píng)：用到的知識(shí)點(diǎn)為：a的相反數(shù)是-a；乘積為1的兩個(gè)數(shù)互為倒數(shù)；絕對(duì)值等于本身的數(shù)是正數(shù)或0，統(tǒng)稱非負(fù)數(shù)．