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**atran****Member**- Registered: 2013-07-12
- Posts: 91

Hi,

Am I thinking right? Quotient is the result of division. Ratio relates one quantity to another. Fraction is ratio of two quantities of the same type.

Thanks...

*Last edited by atran (2013-07-27 07:10:27)*

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,306

Hi;

To get a definition look here:

http://www.mathsisfun.com/definitions/quotient.html

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**atran****Member**- Registered: 2013-07-12
- Posts: 91

Thanks for the links.

Say I want two thirds of a cake with the area, A. The expression for the wanted area becomes, 2A/3.

As for fractions, I don't understand why the denominator represents the whole and the numerator represents the part.

*Last edited by atran (2013-07-28 03:15:03)*

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,306

The whole cake is divided into 3 pieces ( the denominator ) You eat 2 of them ( the numerator ).

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**atran****Member**- Registered: 2013-07-12
- Posts: 91

I'm thinking like this: If the area of the cake is 1, then it's obvious that one third of the cake is (1/3), therefore two thirds is (2/3).

But it's a bit vague to me, why do the denominator and the numerator represent the whole and the part respectively? I mean, arithmetically, (2/3) means three divides two. From where does the part-to-whole interpretation of division comes from?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,306

Hi;

Thinking of it as 2 divided by 3 is just one way of looking at that is useful for getting the decimal representation.

I do not know where the part - whole idea comes from and I do not use it. If you are not having trouble with fractions thinking about them in your own way then I say that is fine.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,501

hi atran,

Let's say you have two cakes and you want to share these out equally between three people.

The diagram shows this happening and each person gets two thirds of a cake.

You can easily generalise this.

So getting the answer for 2 divided by 3 and the fraction 2/3 are the same thing.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**atran****Member**- Registered: 2013-07-12
- Posts: 91

Now I got it, thanks...

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