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#1 2006-11-30 09:15:09

lostmathmom
Member
Registered: 2006-11-30
Posts: 1

Dividing Fractions

I am trying to help my daughter divide fractions  the problem is 2/3 divided by n = 3/4.  I am having a terrible time figuring it out and  of course she has no book for examples.  Can anyone help?  Thanks so much:)

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#2 2006-11-30 09:24:18

pi man
Member
Registered: 2006-07-06
Posts: 251

Re: Dividing Fractions

Dividing by a fraction is the same as muiltiplying by its inverse:

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#3 2007-03-31 01:27:11

!mathfun
Member
Registered: 2007-03-31
Posts: 1

Re: Dividing Fractions

for teaching, figuring it out like

(2/3) / n = (3/4)
(2/3) /= (3/4) *n
(2/3) / (3/4) = n
n= (2/3) / (3/4)
n= (2/3) * (4/3)
n= (2*4)/(3*3)
n= 8/9

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#4 2007-03-31 11:55:35

justlookingforthemoment
Moderator
Registered: 2005-05-26
Posts: 2,161

Re: Dividing Fractions

Welcome to the forum, !mathfun and lostmathmom.

I'm moving this to the Help Me forum ... hopefully you'll still be able to find it. I'll leave a redirect.

Thanks guys, and have fun on the forum.

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#5 2007-03-31 13:54:48

Stanley_Marsh
Member
Registered: 2006-12-13
Posts: 345

Re: Dividing Fractions

all you need to do , is to put the divisor up side down and multiply

Last edited by Stanley_Marsh (2007-03-31 13:56:37)


Numbers are the essence of the Universe

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#6 2008-06-01 21:03:30

iamthepro
Member
Registered: 2008-06-01
Posts: 1

Re: Dividing Fractions

(2/3) / (3/4) = [(2/3) / (3/4)] x [(4/3) / (4/3)] = (2/3) x (4/3)  = 8/9

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#7 2010-07-16 16:18:27

Recey
Guest

Re: Dividing Fractions

Here is a guide http://hubpages.com/hub/Adding-and-subtracting-fraction

#8 2010-07-17 02:23:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,150

Re: Dividing Fractions


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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