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歡迎您訪問數學考題練習:下列是互為相反數的一組為!

數學考題練習:下列是互為相反數的一組為

更新時間:2024-01-12 16:30:17作者:貝語網校

下列是互為相反數的一組為

A.(-2)3與(-3)2

B.-23與(-2)3

C.-22與(-2)2

D.2與|-2|

試題答案

C

試題解析

一注意相反數的定義:只有符號不同的兩個數叫做互為相反數;0的相反數是0.

二注意能夠根據乘方的意義正確化簡各個數,然后結合相反數的定義進行判斷.

解答:A中,(-2)3=-8,(-3)2=9;

B中,-23=-8,(-2)3=-8;

C中,-22=-4,(-2)2=4;

D中,|-2|=2.

所以互為相反數的一組為-22與(-2)2

故選C.

點評:本題考查了互為相反數的意義,只有符號不同的兩個數叫做互為相反數.能夠根據乘方的意義正確化簡各個數.

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