Sunday, September 26, 2010

Converting percentages as fractions,

 In this lesson we're going to learn converting percentages to fractions. I assume you guys are now confident with the converting so this lesson will be an easy one.

  Converting percentages to fraction is easy. reason we learned that the meaning of the percentage is hundredth or out of 100.  Also when you changed to fractions, some of the fractions can be simplified.

 1. Our first example is "Convert 60% to fractions."
 To review our work, percentage is one of special fraction,
which it has a denominator of 100.
So 60% can be written in 60/100 and we simplify and the answer is 3/5.

  2. Second example is "Convert 25% to a fraction."
25% can be written in 25/100, then simplify therefore our answer is 1/4.

  3. third example is 4 1/5% to a fraction."
   4 1/5% =  4 1/5 / 100                The numerator and denominator of a fraction must be whole numbers.
   = 4 1/5 x 5 / 100 x 5                 To make 4 1/5 a whole number, we change it to the improper fraction
   = 21/500                                    then multiply it by 5, same as the denominator, we multiply 100 by 5.
   i.e 21/500.

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