Percentage change 1 (AQA GCSE Maths): Flashcards
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Two main methods for percentage changes
Two main methods for percentage changes
Traditional calculation and multiplier method
Method 1: Traditional calculation steps
Method 1: Traditional calculation steps
Calculate % of amount, then add or subtract it
Method 2: Multiplier method advantage
Method 2: Multiplier method advantage
Quicker and reduces chance of errors
Multiplier for 30% increase
Multiplier for 30% increase
(100% + 30% = 130% = 1.3)
Multiplier for 26% decrease
Multiplier for 26% decrease
(100% - 26% = 74% = 0.74)
Formula for percentage change
Formula for percentage change
Decimal places required for money answers
Decimal places required for money answers
2 decimal places
Multipliers > 1 indicate
Multipliers > 1 indicate
Increases
Multipliers < 1 indicate
Multipliers < 1 indicate
Decreases
Alternative terms for % increase/decrease
Alternative terms for % increase/decrease
Percentage profit or percentage loss