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歡迎您訪問數學考題練習:一個數的絕對值等于這個數本身,這樣的數有!

數學考題練習:一個數的絕對值等于這個數本身,這樣的數有

更新時間:2024-01-12 16:46:45作者:貝語網校

一個數的絕對值等于這個數本身,這樣的數有

A.1個

B.2個

C.3個

D.無數個

試題答案

D

試題解析

根據絕對值的定義:一個正數的絕對值是它本身,一個負數的絕對值是它的相反數,0的絕對值是0.故絕對值等于本身的數是正數或0,即非負數.

解答:絕對值等于本身的數是非負數.

故這樣的數有無數個.

故選D.

點評:考查了絕對值的性質,絕對值規律總結:一個正數的絕對值是它本身;一個負數的絕對值是它的相反數;0的絕對值是0.

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