数学符号的英语读法

数学符号的英语读法1.CardinalsandOrdinals基数和序数(1)100以内的数词基数序数RomanArabicNumeralsNumerals罗马数字阿拉伯数字读法数码读法I1one1stthefirstII2two2ndthesecondIII3three3rdthethirdIV4four4ththefourthV5five5ththefifthVI6six6ththesixthVII7seven7ththeseventhVIII8eight8ththeeighthIX9nine9ththeninthX10ten10ththetenthXI11eleven11ththeeleventhXII12twelve12ththetwelfthXIII13thirteen13ththethirteenthXIV14fourteen14ththefourteenthXV15fifteen15ththefifteenthXVI16sixteen16ththesixteenthXVII17seventeen17ththeseventeenthXVIII18eighteen18ththeeighteenthXIX19nineteen19ththenineteenthXX20twenty20ththetwentiethXXI21twenty-one21stthetwenty-firstXXV25twenty-five25ththetwenty-fifthXXX30thirty30ththethirtiethXL40forty40ththefortiethL50fifty50ththefiftiethLX60sixty60ththesixtiethLXX70seventy70ththeseventiethLXXX80eighty80ththeeightiethXC90ninety90ththeninetiethIC99ninety-nine99ththeninety-ninthC100onehundred100ththehundredthCII102ahundred102ndthe(one)hundredandtwoandsecond246twohundredandforty-six751sevenhundredandfifty-one(2)1000以上的数词1,000=onethousand一千10,000=tenthousand一万100,000=onehundredthousand十万1,000,000=onemillion一百万10,000,000=tenmillion一千万100,000,000=onehundredmillion一亿(3)十亿以上的大数，英美有不同的读法：英国美国十亿onethousandmillion=onebillion百亿tenthousandmillion=tenbillion千亿onehundredthousandmillion=onehundredbillion万亿onebillion=onetrillion2.Fractions分数通常将分子读为基数，将分母读为序数。1/2=a(orone)half1/3=a(orone)third1/4=aquarteroronefouth1/5=a(orone)fifth2/3=twothirds9/10=ninetenths53/4=fiveandthreequarters15/64=fifteenover(orby)sixty-four15%=fifteenpercent4‰=fourpermill3.Decimals小数0.4=zero(ornought)pointfour.01=point(ordecimal)noughtone12.34=twelvepointthreefour567.809=fivehundredandsixty-sevenpointeightnoughtnine30.45=thirtypointfourfive,fiverecurring0.3%=decimalthreepercent4.MathematicForms数学式(1)Addition加法1+2=3Oneandtwoarethree.2+3=5Twoplusthreeequalsfive.4+0=4Fourandnoughtisequaltofour.45+70+152=26745,70and152addedare(ormake)267thesum(ortotal)is267.演算时的读法：Threeandsevenareten;Iwrite(orIwritedown,orIputdown)anoughtandcarryone.FourandonethatIcarryarefive,andeightmakethirteen,andthreesixteen;Iwritedownsixandcarryone.Oneandone(thatIcarry)aretwo;Iputdowntwo.-Thesum(ortotal,ortheresultoftheaddition)istwohundredandsixty.37,80and143addedtogether,and(ormake)260.(2)Subtraction减法9-4=5Nineminusfourequals(orisequalto)five.15-7=8Sevenfromfifteenleaveseight.23,654-8,175=15,4798,175(takeorsubtracted)from23,654leaves15,479.Thedifference(orTheremainder)is15,479.Ninefromfivewon`tgo.演算时的读法：Noughtfromnought(leaves)nought.Onefromoneleavesnought(ornothing).Twofromthree(leaves)one.Ican`ttake(orsubtract)fivefromfour;Imustborrowten;fivefromfourteenleavesnine.-Thedifference(orTheremainder)isninethousandonehundred.5210(takeorsubstracted)from14,310leaves9,100.(3)Multiplication乘法1×0=0Onemultipliedbynoughtequalsnought.1×1=1Onceoneisone.2×1=2Twiceoneistwo.3×5=15Threetimesfiveisfifteen6×0=0Multiplysixbynothing,andtheresultisnothing.演算时的读法:Fivetimesnine(orNinemultipliedbyfive)areforty-five;Iputdownfiveandcarryfour.Fivetimessevenarethirty-fiveandfour(thatIcarry)arethirty-nine;Iwritedownnineandcarrythree.Fivetimessixmakethirtyandthree(thatIcarry)thirty-three;Iputdownthirty-three.Eighttimesnine(orEightnine)areseventwo;Iwritetwoandcarryseven.Eightsevensmakefifty-sixandsevenaresixty-three.Iputdownthreeandcarrysix.Eightsixesmakeforty-eightandsixfifty-four;Iwritedownfifty-four.Inowaddthepartialresults(orproducts)Five.Twoandnineareeleven.Threeandthreearesixandoneareseven.Fourandthreemakeseven.Five.(4)Division除法9÷3=3Ninedividedbythreemaks(orisequalto)three.20÷5=4Fiveintotwentygoesfourtimes.4567÷23=198余1323into4567goes198times,and13remainder.Thequctientis198,and13remainder.演算时的读法:Fifteenintothirteenwon`tgo;fifteenintoonehundredandthirty-eightgoesninetimes;ninetimesfifteenareonehundredandthrety-five;onehundredandthirty-fivefromonehundredandthirty-eightleavesthree;Ibringdownseven;fifteenintothirty-sevengoestwice;twicefifteenarethirty;thirtyfromthirty-sevenleavesseven.The(exact)quotientisninety-two,andsevenremainder;15into1387goes92times,and7remainder.5.Time时间(1)Hours钟点2h.5'8=twohoursfiveminuteseightseconds2小时5分8秒6.18=sixeighteen6时18分8.30a.m.=eightthirtya.m.['ei'em]上午8时30分the6.05p.m.train=thesix(nought)fivep.m.['pi:'em]train下午6时零5分列车又二十四小时混合制的写法和读法如下：0900=0ninehunderd(上午)9时0910=0nineten(上午)9时10分1300=thirteenhundred13时(下午1时)1525=fifteentwenty-five15时25分(下午3时25分)2000=twentyhundred20时(下午8时)at5o'c=atfiveo'clock五点钟(2)Date日期Oct.1=Octoberfirst10月1日Oct.1st=Octoberthefirst10月1日IstOct.1949=tehfirstofOctober,nineteenforty-nine1949年10月1日3/5=[英]May(the)third5月3日；[美]Marchfifth3月5日[附注]联系日期前置词用on.(3)Year年份684B.C.=Sixeighty-fourB.C.['bi:'si:]公元前684年1960=nineteensixty;nineteenhundredandsixty19-nineteensomething1950'snineteenfifties二十世纪五十年代[附注]联系年份的前置词用in.6.Numbers号码(1)TelephonesNumbers电话号码1023=oneOtwothree;tentwenty-three1227=onedoubletwo(ortwotwo)seven0386=Othreeeightsix0096=doubleO(orOO)ninesix7000=sevenOdoubleO=seventhousandNo.26=Number26第26号Room201=RoomtwoOone第201房间10ChanganStreet=TenChanganStreet长安街10号(2)Writings书籍作品Vol.I=Volumeone(orthefirst