Percentages (age 12+)
Mathematics · Ratio & Proportion · procedural
Solve problems involving percentage increase, percentage decrease, finding the original value after a percentage change, and calculating simple interest
What mastery looks like
- Calculate a 15% increase on £240 using a decimal multiplier (× 1.15)
- Find the original price before a 20% discount resulted in a sale price of £64
- Calculate simple interest on £500 at 3% per annum for 4 years
Check your understanding
If a bike originally costs £250 and its price goes up by 8%, can Percentages (age 12+) work out the new price — and if a savings account earns 3% simple interest per year, how much interest would £500 earn in 4 years?
Prerequisites
Required first
Helpful