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Teachers' Lounge Discussion: Partitioning Fractions

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From: RON

To: Teacher2Teacher Public Discussion
Date: 2003061814:17:34
Subject: Re: Re: fraction to percent

To change a fraction to a percent , e.g. 18/45: 1) Set up a proportion 18/45 = x/100 (percent means "out of 100") Solve the proportion ( by cross multiplying ) 45x=1800 (Then divide both sides by 45) or x=40 Therefore 18/45 = 40% OR 2) Change the fraction to a decimal. Divide the numerator by the denominator. 18/45 = .4 Then move the decimal two places to the right. Therefore 18/45 = 40%

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