数学各类运算的英文表达

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1、数学符号面面观：各类运算的英文表达小数、分数、百分数1.小数表示法小数点左边的数通常按基数词读，若为三位以上的数，也可按编码式读法读出，即将数字单个读出；小数点右边的数通常按编码式读法单个读出。如：6.86sixpointeightsix14.15fourteenpointonefive345.456threefourfivepointfourfivesix或threehundredandforty－fivepointfourfivesix小数中“0”的读法：“0”在小数中通常读作nought（英）或zero（美），也可读作字母o。如：0.0

2、8（nought）pointnoughteight或（zero）pointzeroeight9.07ninepointoseven2.百分数表示法百分数中的百分号%读作percent。如：6%读作sixpercent0.6%读作（nought）pointsixpercent500%读作fivehundredpercent3.倍数表示法倍数表示方法很多，如：Thisroomisfourtimesasbigasmine.这个房间是我房间的四倍。Thisroomisthreetimeslargerthanthatone.这个房间比那个房间大三倍。T

3、heoutputofcoalhasdoubled.煤的产量增加了一倍。MyauntisasoldagainasIam.我姑姑年龄比我大一倍。Productivityisincreasedthreefold.生产效率提高了两倍。ThevolumeoftheSunisabout1,300,000timesthatoftheEarth.太阳的体积约为地球的1300000倍。4.分数表示法(1)较小分数的一般读写方法。如：1/3one-third2/3two-thirds3/5three-fifths(2)较复杂分数的简明读写方法。如：22/9twe

4、nty-twooverninea/baoverb或adividedbyb43/97forty-threeoverninety-seven(3)整数与分数之间须用and连接。如：fourandahalfnineandtwofifths(4)分数用作前置定语时，分母要用单数形式。注意下列写法与读法。如：aone-thirdmile1/3英里athree-quartermajority3/4的多数加、减、乘、除表示法1．加：用and,plus,addedto等词表示。2＋4＝6可译为：Twoandfourissix.Twoplusfourisequ

5、altosix.Twoaddedtofourequalssix.Twoandfourmakessix.Twoplusfourwillbesix.Ifyouaddtwotofour,yougetsix.2．减：用minus,takenfrom,subtractedfrom等表示。8－3=可译为：Eightminusthreeisfive.Eightminusthreeisequaltofive.Threetakenfromeightleavesfive.Threesubtractedfromeightleavesfive.Takethreefr

6、omeightandtheremainderisfive.3．乘：用multiply...by.../multipliedby/time等表示。3×5=15可译为：Multiplythreebyfiveis(gives)fifteen.Threemultipliedbyfiveisfifteen.Multiplythreebyfive,yougetfifteen.Threetimesfiveis(makes,willbe,equals,isequalto)fifteen.4．除：用divide...by.../dividedby/divide

7、...into.../into等表示。24÷8=3可译为：Twenty-fourdividedbyeightmakes(is,equals)three.Twenty-fourdividedbyeightisequaltothree.Eightintotwenty-fourgoesthreetimes.Divideeightintotwenty-four,andyougetthree.Dividetwenty-fourbyeight,andyougetthree.各类运算的读法6+5＝11Sixplusfiveiseleven或Sixandfi

8、veiseleven.11-6＝5Elevenminussixisfive.或Sixfromelevenisfive.4×5＝20Fourmultipliedbyf