Math Is Fun Forum

judy-o

Member

Registered: 2007-11-27

Posts: 1

decimal to fraction

Please tell me what fraction .9 represents on a ruler. Can you show how you did it and is there a common decimal number that you can use to obtain the  fractional value? I thought it was something like .083 but, I don't know.
Thank you,
judy

Identity

Member

Registered: 2007-04-18

Posts: 934

Re: decimal to fraction

If you let x = 0.9, then if you multiply both sides by 10, you will get 10x = 9. Then divide both sides by 10 and you get x = 9/10

That means 0.9 = 9/10

judy-o

Member

Registered: 2007-11-27

Posts: 1

Re: decimal to fraction

Thank you, but what is 9/10 on a ruler?

mikau

Member

Registered: 2005-08-22

Posts: 1,504

Re: decimal to fraction

asking "whats 9/10's on a ruler?" doesn't really make sense, Judy-o. When we talk abut fractions, the denominator (bottom number) represents how many pieces the whole is divided up into, and the numerator (numerator) says how many of those we have. So what is the whole in your case? Do you want 9/10'ths of an inch? 9/10ths of a foot? 9/10ths of a yardstick? 9/10's of a meter?

Also what kind of ruler are you using? A metric ruler, or a feet and inches ruler? We need more information.

Last edited by mikau (2007-11-27 16:06:46)

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A logarithm is just a misspelled algorithm.