又是讨厌的数学课。哎,王小明,我们放学后去踢球吧。 yòu shì tǎoyàn de shùxué kè。 āi, WángXiǎoMíng, wǒmen fàngxué hòu qù tī qiú ba。 It's the dreaded math class again. Agh, Wang Xiao Ming, after we get out of school let's go play soccer.
B:
李佳,说什么呢?站起来,给我们解释一下什么叫分数? lǐjiā, shuō shénme ne? zhàn qǐlai, gěi wǒmen jiěshì yīxià shénme jiào fēnshù? Li Jia, what are you saying? Stand up and explain to us what fractions are.
A:
分数,表示一个数是另一个数的几分之几。 fēnshù, biǎoshì yī gè shù shì lìng yī ge shù de jǐ fēn zhī jǐ。 Fractions show how many parts one number is of another.
B:
举个例子? jǔ gè lìzi? Can you give an example?
A:
比如三个苹果里我拿了一个,就是三分之一。 bǐrú sān gè píngguǒ lǐ wǒ ná le yī gè, jiùshì sān fēn zhī yī。 For example, if I take one apple from three apples, that is one third.
先写分数线。“上面”是分子,写在分数线上面。“下面”是分母,写在下 面。 xiān xiě fēnshùxiàn。“ shàngmiàn” shì fēnzǐ, xiě zài fēnshùxiàn shàngmian。“ xiàmian” shì fēnmǔ, xiě zài xiàmiàn。 First write the fraction line. "The top" is the numerator, and is written on top of the fraction line. "The bottom" is the denominator, and is written underneath.
B:
好的,那百分数是什么? hǎo de, nà bǎifēnshù shì shénme? Good. Then what is percentage?
A:
就是百分之多少,比如:四分之一就是百分之二十五,二分之一就是百 分之五十。 jiùshì bǎifēn zhī duōshǎo, bǐrú: sì fēn zhī yī jiùshì bǎifēn zhī èrshíwǔ, èr fēn zhī yī jiùshì bǎifēn zhī wǔshí。 That is a fraction of a hundred, for example: one fourth is twenty-five percent; one half is fifty percent.
B:
那“几成”是什么? nà“ jǐ chéng” shì shénme? Then what is "several tenths"?
A:
“成”就是十分之几。比如“九成”就是十分之九,也就是百分之九十。 “ chéng” jiùshì shí fēn zhī jǐ。 bǐrú“ jiǔ chéng” jiùshì shí fēn zhī jiǔ, yě jiùshì bǎifēn zhī jiǔshí。 "A tenth" is a fraction of ten. For example, "nine tenths" is nine over ten, and also is ninety percent.
以后上课别睡觉了!也不许说话!再说话,就罚站! yǐhòu shàngkè bié shuìjiào le! yě bùxǔ shuōhuà! zài shuōhuà, jiù fázhàn! In the future, do not sleep in class! And you are not allowed to talk! If you talk again, you will stand still as a punishment!