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歡迎您訪問數學考題練習:如果一個整數加4為正,加2為負,那么這個數與-!

數學考題練習:如果一個整數加4為正,加2為負,那么這個數與-

更新時間:2024-01-12 12:54:15作者:貝語網校

如果一個整數加4為正,加2為負,那么這個數與-2的和為

A.-4

B.-5

C.5

D.4

試題答案

B

試題解析

根據題整數加2為負,則一定比-2小,加4為正,則一定比-4大,從而確定這個整數是多少,再與-2相加即可.

解答:由題意可知,這個整數小于-2,大于-4,故只能是-3,-3+(-2)=-5.故選B.

點評:本題主要考查有理數加法法則的運用,確定這個整數是多少是解決本題的關鍵.

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