0,且│x│>│y│,那么x+y是A.正數B.負數C.0D.正、負不能確定" />

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每日一練:若x0,且│x│>│y│,那么x+y是

更新時間:2024-01-12 12:55:37作者:貝語網校

若x<0,y>0,且│x│>│y│,那么x+y是

A.正數

B.負數

C.0

D.正、負不能確定

試題答案

B

試題解析

由于x<0,y>0,且|x|>|y|,由此說明負數的絕對值大于正數的絕對值,然后就可以確定x+y的正負.

解答:解:∵x<0,y>0,且|x|>|y|,

∴負數的絕對值大于正數的絕對值,

那么x+y是負數.

故選B.

點評:此題主要考查了絕對值的性質及有理數的加法,解題時首先根據已知條件確定x、y的正負及絕對值的大小,然后利用有理數的加法法則即可解決問題.

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