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Multiplying and Dividing Mixed Numbers


Date: 6/5/96 at 18:53:41
From: Anonymous
Subject: Multiplying / dividing mixed numbers 

Dear Dr. Math,

I need help on multiplying and dividing mixed numbers - like 1 1/2 
divided by 9/10 or 8 1/4 x 2 2/3 or 3 1/2 x 2/7 x 4.
It's like those.                                         

Eric Roger Thomas


Date: 6/6/96 at 8:24:19
From: Doctor Anthony
Subject: Re: Multiplying / dividing mixed numbers

Before multiplying or dividing mixed numbers, first convert them to 
improper fractions.  So 1 1/2 = 3/2 and multiplied by 9/10 gives

    (3/2)*(9/10) = 27/20 = 1 7/20

(8 1/4)*(2 2/3) = (33/4)*(8/3) = (33*8)/(4*3) = 11*2 = 22

(3 1/2)*(2/7)*(4) = (7/2)*(2/7)*(4) = 4


-Doctor Anthony,  The Math Forum
 Check out our web site!  http://mathforum.org/dr.math/

Associated Topics:
Elementary Fractions

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