新东方整理.docx
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新东方整理
新东方整理：
SAT数学练习题及答案
（1）
（2）
SAT考试数学练习题SATMathPractice1参考答案
☆1.CorrectAnswer:
B
Explanation:
Onewaytodealwithfractionsistoconvertthemalltodecimals.（Usingyourcalculator,dividethenumeratorbythedenominator）.
Inthiscaseallyouwouldneedtodoistoseewhichisgreaterthan0.5.
Otherwisetoseewhichisgreaterthan?
doublethenumeratorandseeiftheresultisgreaterthanthedenominator.InB,thecorrectanswer,doublingthenumeratorgivesus8,whichisbiggerthan7.
☆2.CorrectAnswer:
E
Explanation:
Ifanobjecttravelsat5feetperseconditcovers5x60feetinoneminute,and5x60x60feetinonehour.Answer=18000（E）
☆3.CorrectAnswer:
C
Explanation:
Youcouldaddupallthemultiplesof10（10+20+30....+190）,anddividebythenumberofterms（19）.Oryoucouldrealizethattheaverageofanevenlyspacedseriesofnumbersisequaltothevalueofthemiddleterm（ortheaverageofthetwomiddletermsifthereareanevennumberofterms）.Themiddletermoutof19isthetenthtermintheseries=100.
☆4.CorrectAnswer:
A
Explanation:
Ifyoudoublethesidesofacube,theratioofthesurfaceareasoftheoldandnewcubeswillbe1:
4.Theratioofthevolumesoftheoldandnewcubeswillbe1:
8.
Weightisproportionaltovolume.So,Ifthefirstweighs6pounds,thesecondweighs6x8pounds=48.
☆5.CorrectAnswer:
C
Explanation:
YoucouldsolvethisbydrawingaVenndiagram.AsimplerwayistorealizethatyoucansubtractthenumberofstudentstakingbothlanguagesfromthenumberstakingFrenchtofindthenumbertakingonlyFrench.LikewisefindthosetakingonlyGerman.Thenwehave:
Total=onlyFrench+onlyGerman+both+neither
78=（41-9）+（22-9）+9+neither.
Notenrolledstudents=24
新东方整理：
SAT数学练习题及答案
（1）
SAT考试数学练习题SATMathPractice1
☆1.Ofthefollowing,whichisgreaterthan?
?
A.2/5
B.4/7
C.4/9
D.5/11
E.6/13
☆2.Ifanobjecttravelsatfivefeetpersecond,howmanyfeetdoesittravelinonehour?
A.30
B.300
C.720
D.1800
E.18000
☆3.Whatistheaverage（arithmeticmean）ofallthemultiplesoftenfrom10to190inclusive?
A.90
B.95
C.100
D.105
E.110
☆4.Acubicalblockofmetalweighs6pounds.Howmuchwillanothercubeofthesamemetalweighifitssidesaretwiceaslong?
A.48
B.32
C.24
D.18
E.12
☆5.Inaclassof78students41aretakingFrench,22aretakingGermanand9studentsaretakingbothFrenchandGerman.Howmanystudentsarenotenrolledineithercourse?
A.6
B.15
C.24
D.33
E.54
新东方整理：
SAT数学练习题及答案
（1）
（2）
SAT考试数学练习题SATMathPractice1参考答案
☆1.CorrectAnswer:
B
Explanation:
Onewaytodealwithfractionsistoconvertthemalltodecimals.（Usingyourcalculator,dividethenumeratorbythedenominator）.
Inthiscaseallyouwouldneedtodoistoseewhichisgreaterthan0.5.
Otherwisetoseewhichisgreaterthan?
doublethenumeratorandseeiftheresultisgreaterthanthedenominator.InB,thecorrectanswer,doublingthenumeratorgivesus8,whichisbiggerthan7.
☆2.CorrectAnswer:
E
Explanation:
Ifanobjecttravelsat5feetperseconditcovers5x60feetinoneminute,and5x60x60feetinonehour.Answer=18000（E）
☆3.CorrectAnswer:
C
Explanation:
Youcouldaddupallthemultiplesof10（10+20+30....+190）,anddividebythenumberofterms（19）.Oryoucouldrealizethattheaverageofanevenlyspacedseriesofnumbersisequaltothevalueofthemiddleterm（ortheaverageofthetwomiddletermsifthereareanevennumberofterms）.Themiddletermoutof19isthetenthtermintheseries=100.
☆4.CorrectAnswer:
A
Explanation:
Ifyoudoublethesidesofacube,theratioofthesurfaceareasoftheoldandnewcubeswillbe1:
4.Theratioofthevolumesoftheoldandnewcubeswillbe1:
8.
Weightisproportionaltovolume.So,Ifthefirstweighs6pounds,thesecondweighs6x8pounds=48.
☆5.CorrectAnswer:
C
Explanation:
YoucouldsolvethisbydrawingaVenndiagram.AsimplerwayistorealizethatyoucansubtractthenumberofstudentstakingbothlanguagesfromthenumberstakingFrenchtofindthenumbertakingonlyFrench.LikewisefindthosetakingonlyGerman.Thenwehave:
Total=onlyFrench+onlyGerman+both+neither
78=（41-9）+（22-9）+9+neither.
Notenrolledstudents=24
新东方整理：
SAT数学练习题及答案
（1）
SAT考试数学练习题SATMathPractice1
☆1.Ofthefollowing,whichisgreaterthan?
?
A.2/5
B.4/7
C.4/9
D.5/11
E.6/13
☆2.Ifanobjecttravelsatfivefeetpersecond,howmanyfeetdoesittravelinonehour?
A.30
B.300
C.720
D.1800
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