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小升初英文奥数题

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小升初英文奥数题小升初英文奥数题一1、In2004,16JunefallsonaWednesday.Onwhatdayoftheweekwill16Junefallin2010  2、Ifhalfofanumberis30,thenthree-quartersofthatnumberis____.  3、Thesumofthedigitsofthefollowingproduct999×555  4、Threepositiveintegershaveasumof28.Thegreatestpossibleproductthattheseint...
小升初英文奥数题
小升初英文奥数题一1、In2004,16JunefallsonaWednesday.Onwhatdayoftheweekwill16Junefallin2010  2、Ifhalfofanumberis30,thenthree-quartersofthatnumberis____.  3、Thesumofthedigitsofthefollowingproduct999×555  4、Threepositiveintegershaveasumof28.Thegreatestpossibleproductthattheseintegerscanhaveis_____.  5、Inwhatfollows,□andΔaredifferentnumbers.When503isdividedby□theremainderis20.When503isdividedbyΔtheremainderis20.When493isdividedby□xΔtheremainderis_____.  6、Alady,herbrother,hersonandherdaughter(allrelatedbybirth)playedvolleyball.Theworstplayer'stwin(whoisoneofthefourplayers)andthebestplayerareofoppositesex.Theworstplayerandthebestplayerareofthesameage.Whocannotbetheworstplayer(s)  A)brotheronly  B)daughteronly  C)sonanddaughteronly  D)ladyanddaughteronly  E)ladyonly  7、Ifyoucontinuethegivennumberpattern,inwhatrowandinwhatpositioninthatrowwillthenumber320be  1--------------row1  23--------------row2  456--------------row3  78910--------------row4  Theanswersaregivenintheorderofrow;position.  翻译:4.三个正整数之和为28,他们积的最大值是(810)9*9*10=8105.□和△代表不同数字,503/□的余数是20,503/△的余数是20,那么493/(□×△)的余数是(10或493)这个题出得有点问题,503-20=483=3*7*23,假如□×△>493,例如21*69,则余数为493,不然为106.一位女士,她兄弟,她的儿子和女儿(都是亲的)打排球.最差球手的孪生同胞和最佳球手异性,最差球手和最佳球手同龄,谁不可能是最差球手(之一)A.只有兄弟B.只有女儿C.只有儿子和女儿D.只有女士和女儿E.只有女士也就是说最差球手和最佳球手同性且同龄,最差球手是双胞胎之一,这样只有一种可能:儿子是最差,女士的弟弟与儿子同龄是最佳备选中似乎没合适的6.如过继续下面的数字列表,320在第几行,以及该行的什么位置(也就是第几列)1.....................第1行2,3...................第2行4,5,6.................第3行7,8,9,10..............第4行按照"行,列"的形式给出答案:(25,20)参考答案: Wednesday详解:In2004,16JunefallsonaWednesday.Onwhatdayoftheweekwill16Junefallin2010翻2004年6月16号是星期三,那么2010年6月16号是星期几呢?2004年6月16号是星期三,那么2010年6月16号是星期几呢?还是星期三平年365÷7=52……1闰年366÷7=52……2所以若第二年为平年,则那年的今天星期序号是现年今天后一天;闰年则后两天。2005,2006,2007,2009,2010为平年,2008为闰年于是加起来应该多7天,即一个星期,所以还是星期三2、453、27(求数位上上的数字之和)4、28=9+9+10,因此答案为810  5、503-20=483483=3×7×23=21×23,因此□xΔ=483,因此此题余数是10.6、D7、25,20小升初英文奥数题[2]1、DidyouknowInthedecimalnumbersystem(base10)tendifferentdigits,0to9,areusedtowriteallthenumbers.Inthebinarynumbersystem(base2)twodifferentdigitsareused,i.e.0and1.  Whichoneofthefollowingnumbersisnotavalidnumberintheoctalnumbersystem(base8)A)128B)127C)126D)125E)124  2、Thenumberofdiagonalsthatcanbedrawninaregularpolygonwithtwentysides(icosagon)is_____. 3、Ifaandbareintegers,103=1,1527=3,andthen3796isequalto_____.  4、Twonumbersareintheratio2:3.When4isaddedtoeachnumbertheratiochangesto5:7.Thesumofthetwooriginalnumbersis____.  5、ThegreatestnumberofMondayswhichcanoccurin45consecutivedaysis____  6、Saulplaysavideogameinwhichhescores4forahitandlost6foramiss.After20roundshisscoreis30.Thenumberoftimeshehasmissedis____.  7、ThreegirlsA,BandCrunina100mrace.WhenAfinishes,Bis10mbehindAandwhenBfinishesCis20mbehindB.HowfarinmetreswasCfromAwhenAfinished(Let’sassumealltheathletesrunataconstantspeed)  8、Theareasofthefacesofarectangulaboxare84cm2,70cm2and30cm2.Thevolumeoftheboxincm3is____.  9、Youhave3weights:1kg,3kgand9kgaswellasanequalarmbalance,asshown.Howmanydifferentweightobjectscanyouweighwiththesethree[Remembertheweightsmaybeplacedoneitherside]  参考答案:  1、A考察我们学过的简单的进制问题,显然8进制中没有8出现  2、170找规律,公式为n×(n-3)÷2  3、1定义新运算,就是求379÷6的余数。  4、40,16和24  5、7  6、5  7、28米,根据距1、离比求出速度比,三者的速度比为1:9/10:18/25  8、420分解质因数  9、13种小升初英文奥数题[3]DidyouknowInthedecimalnumbersystem(base10)tendifferentdigits,0to9,areusedtowriteallthenumbers.Inthebinarynumbersystem(base2)twodifferentdigitsareused,i.e.0and1.Whichoneofthefollowingnumbersisnotavalidnumberintheoctalnumbersystem(base8)A)128B)127C)126D)125E)124  2、Thenumberofdiagonalsthatcanbedrawninaregularpolygonwithtwentysides(icosagon)is_____.  3、Ifaandbareintegers,10andthen3796isequalto_____.  4、Twonumbersareintheratio2:3.When4isaddedtoeachnumbertheratiochangesto5:7.Thesumofthetwooriginalnumbersis____.  5、ThegreatestnumberofMondayswhichcanoccurin45consecutivedaysis____  6、Saulplaysavideogameinwhichhescores4forahitandlost6foramiss.After20roundshisscoreis30.Thenumberoftimeshehasmissedis____.  7、ThreegirlsA,BandCrunina100mrace.WhenAfinishes,Bis10mbehindAandwhenBfinishesCis20mbehindB.HowfarinmetreswasCfromAwhenAfinished(Let’sassumealltheathletesrunataconstantspeed)  8、Theareasofthefacesofarectangulaboxare84cm2,70cm2and30cm2.Thevolumeoftheboxincm3is____.  9、Youhave3weights:1kg,3kgand9kgaswellasanequalarmbalance,asshown.Howmanydifferentweightobjectscanyouweighwiththesethree[Remembertheweightsmaybeplacedoneitherside]  参考答案:  1、A考察我们学过的简单的进制问题,显然8进制中没有8出现  2、170找规律,公式为n×(n-3)÷2  3、1定义新运算,就是求379÷6的余数。  4、40,16和24  5、7  6、5  7、28米,根据距离比求出速度比,三者的速度比为1:9/10:18/25  8、420分解质因数  9、13种小升初英文奥数题[4]1、Anantcoversadistanceof90metresin3hours.Theaveragespeedoftheantindecimetresperminuteis____. 2、  3、Inacertaintownsomepeoplewereaffectedbya’flu’epidemic.Inthefirstmonth20%ofthepopulationcontractedthefluwhilst80%werehealthy.Inthefollowingmonth20%ofthesickpeoplerecoveredand20%ofthehealthypeoplecontractedthedisease.Whatfractionofthepopulationishealthyattheendofthesecondmonth  4、Mpho,Barry,Sipho,EricaandFatimaaresittingonaparkbench.Mphoisnotsittingonthefarright.Barryisnotsittingonthefarleft.Siphoisnotsittingateitherend.EricaissittingtotherightofBarry,butnotnecessarilynexttohim.FatimaisnotsittingnexttoSipho.SiphoisnotsittingnexttoBarry.Whoissittingatthefarright  5、Ofthe28Tshirtsinadrawer,sixarered,fiveareblue,andtherestarewhite.IfBobselectsTshirtsatrandomwhilstpackingforaholiday,whatistheleastnumberhemustremovefromthedrawertobesurethathehasthreeTshirtsofthesamecolour  6、Inanalienlanguage,jalezborgfarnmeans“goodmathsskills”.Nurfklarborgmeans“mathsinharmony”anddarkoklarfarnmeans“goodingold”.Whatis“harmonygold”inthislanguage  7、Fivechildren,Amelia,Bongani,Charles,DevineandEdwina,wereintheclassroomwhenoneofthembrokeawindow.Theteacheraskedeachofthemtomakeastatementabouttheevent,knowingthatthreeofthemalwayslieandtwoalwaystellthetruth.Theirstatementswereasfollows:Amelia:“Charlesdidnotbreakit,nordidDevine.”Bongani:“Ididn’tbreakit,nordidDevine.”Charles:“Ididn’tbreakit,butEdwinadid.”Devine:“AmeliaorEdwinabrokeit.”Edwina:“Charlesbrokeit.”Whobrokethewindow  8、DidyouknowApalindromeisanumberwhichreadsthesameforwardsasbackwardse.g.35453.Nextyear2002isanexampleofapalindromicnumber.Whatisthedifferencebetween2002andthenumberofthepreviouspalindromicyear  9、Ifab=(3×b)thenthevalueof2(2×a)(35)is____.  10、TwoantsstartatpointAandwalkatthesamepace.Oneantwalksarounda3cmby3cmsquarewhilsttheotherwalksarounda6cmby3cmrectangle.Whatistheminimumdistance,incentimetres,anyonemustcoverbeforetheymeetagain  参考答案:  1、?单位换算,注意单词,90×10÷(3×60)=5  2、?46  3、?0.68  4、?Erica  5、?抽屉原则7  6、?注意一一对应,borg=maths,farn=good,jalez=skills.Klar=in,Nurf=harmony,darko=gold.答案是Nurfdarko.  7、?Charles  8、?1001  9、?67  10、?108详解:第一题:蚂蚁3小时走90米,问平均每分钟走多少厘米第二题:古罗马的数字表示方式:I=1,V=5,X=10,L=50,C=100,D=500,M=1000,等,因此I=1,II=2,III=3,IV=4,V=5,VI=6,VII=7,VIII=8,IX=9,X=10,等。例如:XCIX=99,问?XLVI表示的数值是多少第三题:一个城镇受到流感病毒侵袭,第一个月里总人口的20%感染了病毒,其它80%的人是健康的;下一个月里,病人中20%康复了,但原来的健康人中有20%的人又感染了。问第二个月底健康的人口占总人口的百分数是多少第四题:Mpho,?Barry,?Sipho,?Erica?和?Fatima?坐在公园的长凳上,Mpho不在最右边,Barry不在最左边,Sipho不在两端,Erica在Barry的右边,但不一定紧靠他,Fatima?没有在Sipho的旁边,Sipho不在Barry旁边。问:谁坐在最右边第五题:抽屉中的28件T-shirts中,6件是红色的,5件是蓝色的,其它的是白色的。如果Bob随机选择T–shirts在假期穿,为确保他有三件相同颜色的T–shirts,他至少要从抽屉中拿出多少件T-shirtTheperimeter(周长)ofatriangleis2007cm.Thelongestsideis330cmlongerthanthemiddle,whichis330cmlongerthantheshortestside.HowlongistheshortestsideYouhavealotof1cm3volumecubes.Buildacolumn(柱体)witha3cmX3cmbase(底面).Howtallisthecolumnifitssurfacearea(表面积)is318cm2Ifyoureadatwo-digitnumber(两位数)backwords,yougeta1.2times(倍)greaternumber.Findthisnumberplease.InfouryearsXiaoGang’sageplusXiaoLan’sagewillbe31.Fiveyearsago,XiaoGangwas7yearsold.HowoldisXiaoLannowUsingallofthedigits1,2,3,4and5onlyonceforeachnumber,youcanmake120differentnumbers,Ifyouputthesenumbersinanincreasingorder(升序),whatnumberisthe50th
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