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歡迎您訪問數(shù)學(xué)考題練習(xí):m,n為有理數(shù),在數(shù)軸上如圖所示,則下列關(guān)系式!

數(shù)學(xué)考題練習(xí):m,n為有理數(shù),在數(shù)軸上如圖所示,則下列關(guān)系式

更新時間:2024-01-12 16:42:46作者:貝語網(wǎng)校

m,n為有理數(shù),在數(shù)軸上如圖所示,則下列關(guān)系式正確的是

A.m>n

B.|n|<|m|

C.-m<-n

D.m2<n2

試題答案

B

試題解析

由數(shù)軸不難看出:-1<n<0,-2<m<-1.在數(shù)軸上,右邊的數(shù)總比左邊的數(shù)大,進而易判斷下列式子的大小關(guān)系.

解答:由數(shù)軸不難看出:-1<n<0,-2<m<-1.故選B.

點評:注意絕對值的意義和平方的計算.?dāng)?shù)形結(jié)合解決問題.

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