Explore
Percentages Flashcards
GCSE Mathematics (Edexcel) 1MA1
Ready to master these flashcards?
Sign in to study with spaced repetition and track your progress.
Sign In to Track ProgressTerms in this set (10)
Percentage
A fraction expressed as a part of 100.
Finding a percentage of a number
Multiply the number by the percentage (as a decimal or fraction).
Converting a fraction to a percentage
Multiply the fraction by 100 and add the % symbol.
Converting a decimal to a percentage
Multiply the decimal by 100 and add the % symbol.
Converting a percentage to a decimal
Divide the percentage by 100.
Percentage increase
Increase = (Percentage ÷ 100) × Original Value. Add this to the original value.
Percentage decrease
Decrease = (Percentage ÷ 100) × Original Value. Subtract this from the original value.
Reverse percentage
To find the original value, divide the final value by (1 ± percentage change as a decimal).
Expressing one number as a percentage of another
Divide the first number by the second number, then multiply by 100.
Compound interest formula
Final Amount = Principal × (1 + Rate/100)^Time.
Want to Learn More?
Get personalised lessons, quizzes, and instant feedback from your AI tutor.
Start Learning