Question

2、絕對(duì)值等于其本身的數(shù)是

非負(fù)數(shù)

，絕對(duì)值等于其相反數(shù)的數(shù)是

非正數(shù)

．

Answer 1

分析：根據(jù)絕對(duì)值的另一個(gè)意義，非負(fù)數(shù)的絕對(duì)值等于本身，負(fù)數(shù)（非正數(shù)）的絕對(duì)值等于其相反數(shù)作答．

解答：解：根據(jù)絕對(duì)值和相反數(shù)的意義，如：
1，0，25，…等的絕對(duì)值是1，0，25，…
-1，-25，，85，…的絕對(duì)值是它們的相反數(shù)1，25，85，…
所以，絕對(duì)值等于其本身的數(shù)是非負(fù)數(shù)，
絕對(duì)值等于其相反數(shù)的數(shù)是非正數(shù)．
故答案分別為：非負(fù)數(shù)，非正數(shù)．

點(diǎn)評(píng)：此題考查的知識(shí)點(diǎn)是絕對(duì)值和相反數(shù)，解答此題的關(guān)鍵是非負(fù)數(shù)的絕對(duì)值等于本身，負(fù)數(shù)（非正數(shù)）的絕對(duì)值等于其相反數(shù)．