一、数学运算符号的英文表达(小数、分数、百分数和运算符号)1. 小数表示法(1) 小数的读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：6.86 six point eight six14.15 fourteen point one five345.456 three four five point four five six或three hundred and forty－five point four five six(2) 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：0.08 （nought）point nought eight 或（zero）point zero eight9.07 nine point o seven2. 百分数表示法百分数中的百分号％读作percent。
如：6% 读作six percent0.6% 读作（nought）point six percent500% 读作five hundred percent3. 倍数表示法倍数表示方法很多，如：This room is four times as big as mine. 这个房间是我房间的四倍。
This room is three times larger than that one. 这个房间比那个房间大两倍。
The output of coal has doubled. 煤的产量增加了一倍。
My aunt is as old again as I am. 我姑姑年龄比我大一倍。
Productivity is increased three fold. 生产效率提高了两倍。
The volume of the Sun is about 1,300,000 times that of the Earth.太阳的体积约为地球的1300000倍。
一、用times 表示倍数（一般限于包括基数在内三倍或三倍以上的数。
表示两倍的数，一般用twice ）。
其句式有：1. “…times ＋形容词/ 副词的比较级＋than …”例如：Line AB is three times longer than line CD.线段AB 是（线段）CD 的三倍长。
This hall is five times bigger than our classroom.这个大厅比我们的教室大 5 倍。
2. “…times +as + 形容词/ 副词的原级＋as …”例如：This table is three times as long as that one.这张桌子是那张桌子的三倍长。
This dictionary is five times as thick as the one you borrowed from the library.这本词典的厚度是你从图书馆借的那本（厚度）的 5 倍。
3. “…times + the + 名词（如：size，height，weight，length，width 等）＋of …”例如：The earth is 49 times the size of the moon.地球的体积是月球的49 倍。
This river is three times the depth of that one.这条河是那条河的三倍深。
4. “…times + more ＋名词＋than …”例如：He earns five times more money than he did ten years ago.他现在挣的钱比十年前挣的多 5 倍。
There are twice more students in our class than in theirs.我们班的学生人数比他们班多两倍。
5. “…times +as many （或much ）＋名词＋as …”例如：We've produced twice as much cotton this year as （we did ）ten years ago.今年我们生产的棉花比十年前多了一倍。
如何翻译英语加减乘除、分数、小数及百分数随着中国对外交流与合作的不断深入，英语翻译作为语言交流中不可或缺的一环，在社会发展的各个领域中扮演着越来越重要的角色。
实现翻译的高水平发挥，离不开科学的翻译方法。
本文简要归纳和总结了英语翻译中常用的翻译方法，希望有助于英语翻译理论的发展。
如何翻译英语加减乘除、分数、小数及百分数英语分数、小数及百分数的表达1.表达形式⑴分数①基本规则：子基母序 (即：分子用基数词，分母用序数词)1/3 one third 1/8 one eighth 1/12 one twelfth②当分子大于1时，分母要加s变成复数。
2/3 two thirds 3/8 three eighths 5/12 five twelfths③特殊的表达：1/4 可以表示为 one fourth 或者 a quarter3/4 可以表示为 three fourth 或者 three quarters1/2 a half⑵.小数小数点前后的数均按基数词来读，小数点读成point，小数点后的数字逐位读出。
3.1415926 three point one four one five nine two six0.463 zero point four six three⑶.百分数汉语中先读百分号，再读数字;英语中恰恰相反：先念出数字，再加上百分号percent80% eighty percent99.5% ninety-nine point five percent2.由分数、小数或百分数构成主语时，其后的谓语跟分数、小数或百分数的单复并无关系，而是由这些数后的名词的情况来决定。
⑴当所修饰的名词是不可数名词或可数名词的单数时，谓语用单数。
Three quarters of the earth’s surface is water.⑵当所修饰的名词是可数名词的复数时，谓语用复数。
Half of the students are going outing in Suzhou amusement park.英语加减乘除表达1.加减乘除公式⑴ A+B=C A plu sB equals/is C20+5=25 Twenty plus 5 equals/is twenty-five.⑵ A-B=C A minusB equals/is C20-5=15 Twenty minus 5 equals/is fifteen.⑶ A×B=C A multiplied byB equals/is C20×5=100 Twenty multiplied by 5 equals/is one hundred.⑷ A÷B=C A divided byB equals/is C20÷5=4 Twenty divided by 5 equals/is four.2.加减乘除口语化的表达⑴ Add twenty and five, we can get twenty-five.⑵ Subtract five from twenty, we can get fifteen.⑶ Multiply twenty by five, we can get one hundred.⑷ Divide twenty by five, we can four.3. 用how much对加减乘除进行提问⑴Twenty minus five equals fifteen.How much does twenty minus five equal?⑵Twenty minus five is fifteen.How much is twenty minus five?。
英语中如何表达倍数1. 倍数+ as + 形容词或副词的原级+ as + 其他。
这种结构又常演变成下列两类：①倍数+ as + many + 可数名词复数+ as；②倍数+ as +much + 不可数名词+ as。
如：There are seven times as many people as I expected.是我预料的人数的七倍。
There is five times as much coffee in this glass as in that one.这个杯子里的咖啡是那个杯子里的五倍。
2. 倍数+ 形容词（或副词）的比较级+ than + 其他。
如：The hall is five times bigger than our classroom. 这个大厅的面积比我们教室大五倍。
3. 倍数+ the size / height / length / width. etc. + of + 其他。
如：This road is six times the length of that one. 这条路是那条路的六倍长。
4. 计量名词+ of + 名词+ be +倍数+ that + of + 其他。
如：The size of the newly broadened square is four times that of the previous one.新扩建的广场为以前的四倍大。
5. 倍数+what从句。
如：The production is now three times what it was ten years ago.现在的产量是十年前的三倍。
6. 倍数+ more + 名词+ than +其他。
如：There are nine times more books in his bag than in yours.他书包里的书比你书包里的书多九倍。
7. 其他表达。
如：She’s twice/ double my age. 她的年龄是我的两倍。
