Simple Interest Worksheet
Free to print and use in your classroom. No sign-up required.
Simple Interest Worksheet
Formula
Simple interest: I = PRT ÷ 100
Total amount = P + I
Where: I = interest earned, P = principal (starting amount), R = annual interest rate (%), T = time in years
Show full working for each question. Give monetary answers in pounds.
1. Find the simple interest on £500 at 4% per year for 3 years.
2. Find the simple interest on £1,200 at 5% per year for 2 years.
3. Find the total amount after investing £800 at 3% simple interest per year for 4 years.
4. Find the total amount after investing £2,500 at 6% simple interest per year for 5 years.
5. Find the simple interest on £3,000 at 2.5% per year for 3 years.
6. A loan of £4,000 is taken out at 8% simple interest per year for 2 years. What is the total amount to repay?
7. How much simple interest is earned on £600 at 3.5% per year for 4 years?
8. An account pays 2% simple interest per year. A customer deposits £5,000. How much interest is earned in 18 months?
9. Find the principal if simple interest of £180 is earned at 4% per year over 3 years.
10. Find the time taken to earn £200 simple interest on £1,000 at 5% per year.
11. Find the annual interest rate if £150 simple interest is earned on £1,000 over 3 years.
12. Compare: £2,000 at 5% simple interest for 4 years versus £2,000 at 5% compound interest for 4 years. Which gives a greater return and by how much?
13. A savings account pays 1.5% simple interest per year. Molly deposits £3,600. How long will it take her to earn £162 in interest?
14. A loan of £6,000 is fully repaid with £7,080 after 3 years. What was the annual simple interest rate?
15. A student borrows £800 from a friend. They agree to repay it with 3% simple interest per year. If they repay after 2 years and 6 months, what total do they repay?
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