Saturday, September 25, 2010

Percentage introduction

 In this lesson we're starting a new chapter percentage. Percentage uses in our life daily and is another special fraction which has denominator of 100. 

 Percentage occurs everyday in our life. For example your exam mark comes out in percentages, your school report comes out in percentages and statistics on population.

 Percent can be written as %.
It means hundredth, or out of 100 or per hundred and % is made by the two zeroes,
therefore that's why the percentage means hundredth or out of 100, or per hundred.

 For example if there are 100 squares and 34 of them are shaded, find the percentage of the squares that has been shaded.

We write the total in denominator and in numerator, write the number of the square which are shaded.

 Therefore the answer is 34/100 or 34% or 34 out of 100 or 34 hundredth.

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