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Percentage Increase / Decrease

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by

Sam Downe

on 31 October 2014

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Transcript of Percentage Increase / Decrease

Three Forms of Questions
Percentage Increase / Decrease
100 + x times amount
100
Increase by a Percentage
Amount of Change x 100
Starting Amount
Express as a Percentage
Amount x 100
100+ x
After a Percentage Increase
Increase £230 by 5%
100 + 5 x £230
100
Prices of bread have increased from £1.20 to £1.44 . Express this increase as a percentage of the original amount.
24 x 100
120
After an increase of 22% last year, Hugh's bank account stands at £244. How much did he have at the beginning of the year?
244 x 100
100+22
Full transcript