# Percentages

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• Created by: Emma Gent
• Created on: 08-05-13 16:35
• Finding Percentages of Amounts
• Some percentages have  short-cuts eg. 20% = 20/100= 1/5 so just divide by 5
• To find a percentage  out of a number other than 100 eg 26% of 52 . you would just divide 26 by 52 then times it by 100.
• Multiply by 100 to change to a percentage eg. 25 percent  of 40 25/40x100 (%)
• Change the percentage to a fraction out of 100 and multiply
• Some percentages have  short-cuts eg. 20% = 20/100= 1/5 so just divide by 5
• Sometimes you can build up to a percentage eg. 17 1/2 % of £80 = 10% of £80 + 5% of £80 + 2 1/2 % of £80. in these equation you can just half the 10% to get 5% and half the 5% to get the 2 1/2 %