数学表达式符号英语表达.ppt

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1、数学符号及运算英语表达方法,1.“加”用plus，and表示；“等于”用is，make，equal等词表示。2+3=?How much is two plus three?2+3=5Two plus three is fiveTwo and three is equal to fiveTwo and three make fiveTwo and three equals five,数学符号及运算英语表达方法,2.“减”用 minus或 take from表示106?How much is ten minus six?10-6=4Ten minus six is fourTake six fro

2、m ten is four.Six(taken)from ten is four,数学符号及运算英语表达方法,3.“乘”用 multiply.by./multiplied by/time 等表示3X4?How much is three times four?3X4=12Three times four is/are twelveThree multiplied by four makes twelve Multiply three by five is(gives)fifteen.,数学符号及运算英语表达方法,4.“除”用divided by表示164=?How much is sixtee

3、n divided by four?1644Sixteen divided by four is fourSixteen divided by four equals/gives/makes four,数学符号及运算英语表达方法,5.分数(1)较小分数的一般读写方法。如：1/3 one third2/3 two thirds3/5 three fifths(2)较复杂分数的简明读写方法。如：22/9 twenty-two over nine43/97 forty-three over ninety-seven,数学符号及运算英语表达方法,6.小数小数点左边的数通常按基数词读，若为三位以上的数，

4、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 fortyfive point four five six,数学符号及运算英语表达方法,6.小数小数中“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

5、zero eight9.07 nine point o seven,数学符号及运算英语表达方法,7.百分数百分数中的百分号%读作percent。如：6%读作 six percent0.6%读作（nought）point six percent500%读作 five hundred percent,数学符号及运算英语表达方法,8.倍数倍数表示方法很多，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三倍。（实际上就是原来的2倍）The output of coal has doubled.煤的产量增加了一倍。（实际上就是原来的2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。,