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科目: 來源:數學教研室 題型:013

某人以八折的優(yōu)惠價購買一套服裝省15元,那么某人購買這套服裝時,用了   

元。······················································································································  

A35    B60    C75   D150

 

 

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科目: 來源:數學教研室 題型:013

下面變形沒有依據等式性質的是·····································································   

A,那么r=18   BS+5=7,那么S=2

C.m+2=-m-1,那么2m=-3   D.,那么2x=5

 

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科目: 來源:數學教研室 題型:013

下列說法正確的是··························································································   

A.含有未知數的式子叫方程式   B.方程中未知數的值是方程的解

C.方程是等式         D.是一元一次方程

 

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科目: 來源:數學教研室 題型:013

甲池有水,乙池有水,甲池線分鐘流入乙池n分鐘后兩水池的水量相等,則n等于    ( 。

A.  B.   C.  D.

 

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科目: 來源:數學教研室 題型:013

隨著計算機技術的迅猛發(fā)展,電腦價格不斷降低,某品牌電腦按原售價降低m元后,又降價20%,現(xiàn)售價為n元,那么該電腦的原售價為······························································································ ( 。

A.元    B.元  C.元  D.元 

 

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科目: 來源:數學教研室 題型:013

一件工作,甲單獨做20h完成,乙單獨做12h完成,現(xiàn)由甲獨做4h,剩下的甲、乙合做,還要幾h完成?若設剩下部分要x h完成,下列方程正確的是···················································································· (  )

A           B

C.           D.

 

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科目: 來源:數學教研室 題型:013

某商店選用每kg 28元的甲種糖3 kg,每kg 20元的乙種糖2kg,每kg12元的丙種糖5kg,混合成雜糖后出售,則這種雜拌糖平均每kg售價是·················································································· ( 。

A.18元      B.18.4元     C.19.6元     D.20元

 

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科目: 來源:數學教研室 題型:013

在某公路的干線上有相距108kmA、B兩個車站,某日16點整,甲乙兩輛汽車分別從A、B兩站同時出發(fā),相向而行,已知甲車速度為45km/h,乙車速度為36km/h,兩車相遇時間是·················· ( 。

A.16點20分   B.17點20分   C.17點30分    D.16點50分

 

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科目: 來源:數學教研室 題型:013

一份數學試卷有20道選擇題,規(guī)定做對一題得5分,一題不做或做錯扣1分,結果某學生得分為76分,該同學做對題目的個數是····································································································· ( 。

A.15      B.16     C.17      D.18

 

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科目: 來源:數學教研室 題型:013

解方程的過程中,正確的步驟是··························································· (  )

A.移項后再移項   B.僅移項就可解出結果

C.先移項再合并   D.先合并再移項

 

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