Percentage change 2 (Edexcel GCSE Maths): Flashcards
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Practise the cards
12 cards from this deck
Two main types of percentage change
Two main types of percentage change
Percentage increase and percentage decrease
What is a percentage increase?
What is a percentage increase?
Value goes up (e.g. VAT, pay rises, interest)
What is a percentage decrease?
What is a percentage decrease?
Value goes down (e.g. sales discounts, depreciation)
Rule for calculating percentage increases
Rule for calculating percentage increases
Add the percentage to the original amount
Rule for calculating percentage decreases
Rule for calculating percentage decreases
Subtract the percentage from the original amount
How to find 10% of a number without calculator
How to find 10% of a number without calculator
Divide the original number by 10
How to find 1% of a number without calculator
How to find 1% of a number without calculator
Divide the original number by 100
How to find 0.5% of a number
How to find 0.5% of a number
Halve the 1% value
Method to compare products with different % changes
Method to compare products with different % changes
Calculate final price for each item, then compare
3 examples of percentage increases
3 examples of percentage increases
Interest on savings/loans, pay rises, VAT on purchases
3 examples of percentage decreases
3 examples of percentage decreases
Sales discounts, depreciation of assets, price reductions
Key exam tip for percentage change questions
Key exam tip for percentage change questions
Show your working clearly for method marks