Introduction to Percentages (Edexcel GCSE Maths): Revision Note
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Introduction to Percentages
What is a percentage?
“Per-cent” simply means “out of 100” (or “ ÷ 100”)
Rewriting fractions as percentages means they can be compared more easily
You can do this by finding an equivalent fraction with a denominator of 100
The three percentages are much easier to compare than the three fractions
Percentages are also equivalent to decimals
Notice that a decimal can be converted to a percentage by multiplying by 100
Therefore a percentage can be converted to a decimal by dividing by 100
A fraction can be written as a percentage by finding the decimal equivalent
You could use your calculator to do this
e.g.
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