Flashcards
Percentages
Cards in this deck (7)
- 1Percentage Change Formulachange/original x 100%
- 2Important noteAlways make sure the topic of the question is percentage change
- 3Reverse Percentage SynopsisWhen a value is given after it has been increased or decreased and you have to find the original value
- 4How to work out the decimal multiplier if the value has been decreasedMinus the percentage decreased by 100 an then divide by 100
eg 100-15=85
100 divided by 85 is 0.85 - 5How to work out the decimal multiplier if the value has been increasedAdd the percentage increased to 100 an then divide by 100
eg 100+15=115
100 divided by 115=1.15 - 6Basic systemnew price divided by the decimal multiplier equals the original price which multiplied by original price gives the newprice
- 7A good thing to do after when you have the answerMake sure it sounds sensible and fits the question
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- GCSE Maths Flashcards on Percentages, created by Rayan Rashid on 10/09/2016.
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- Rayan Rashid
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