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1、数学式和数学用语的英文读法一、Number数字106：onemillion109：onebillion(oronethousandmillion)1012：onetrillion(oronemillionmillion)1015：onequadrillion(oronethousandmillionmillion)1018：onequintillion(oronemillionmillionmillion)123,456,789：onehundredandtwentythreemillion,fourhundredandfifty-sixthousand,sevenhundredandeig
2、hty-nine12,345,678,900,000：twelvetrillion,threehundredandfortyfivebillion,sixhundredandseventy-eightmillion,ninehundredthousand-18：minuseighteen二、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：aquarteroronefourth1/5：a(orone)fifth2/3：twothirds,twooverthree,ortwobythree9/10：nineten
3、ths,nineoverten,orninebyten53/4：fiveandthreequarters15/64：fifteenover(orby)sixty-four15%：fifteenpercent4‰：fourpermill(ormil)三、Decimals小数0.4：zero(ornaught)pointfour.01：point(ordecimal)naught(oroh)one12.34：twelvepointthreefour567.809：fivehundredandsixty-sevenpointeightnaught(oroh)nine30.45：thirtypoin
4、tfourfive,0.3333333…..：pointthreerepeating(orrecurring)0.3%：point(ordecimal)threepercent11四、MathematicForms数学式(4-1)Addition加法1+2=3：Oneandtwoarethree.2+3=5：Twoplusthreeequalsfive.4+0=4：Fourandnaughtisequaltofour.45+70+152=267：45,70and152addedare(ormake)267thesum(ortotal)is267.(4-2)Subtraction减法9-4=5
5、：Nineminusfourequals(orisequalto)five.15-7=8：Sevenfromfifteenleaveseight.23,654-8,175=15,479：8,175(takeorsubtracted)from23,654leaves15,479.Thedifference(orTheremainder)is15,479.(4-3)Multiplication乘法1×0=0：Onemultipliedbynaughtequalsnaught.1×1=1:Onceoneisone.2×1=2：Twiceoneistwo.3×5=15：Threetimesfivei
6、sfifteen6×0=0：Multiplysixbynothing,andtheresultisnothing.(4-4)Division除法9÷3=3：Ninedividedbythreemakes(orisequalto)three.20÷5=4：Fiveintotwentygoesfourtimes.4567÷23=198余13：23into4567goes198times,and13remainder.Thequotientis198,and13remainder.五、Power幂次方bn当中，b被称为底数(base)，n被称为指数(powerorexponent)bn：thent
7、hpowerofb或btothenthpower.a×107：atimestheseventhpoweroften.b的平方：bsquareorbsquaredb的立方：bcubeorbcubedb的4次方：btothefourthb的-1次方：btotheminusone六、Time时间(6-1)Hours钟点2h.5'8"：twohoursfiveminuteseightseconds2小时5分8秒6.1
