Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 280 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.Find the compound interest on ₹20400 at 20% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹13600 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹14000 at 15% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹36700 at 8% per year for 1 year, compounded every year (in ₹).
6. 6.A scooter is worth ₹35000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
7. 7.Find the compound interest on ₹57000 at 15% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹33500 at 12% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹7500 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹17400 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹49200 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹6300 at 20% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹14000 at 15% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹3100 at 20% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
23. 23.A town has 51500 people. The population grows by 15% every year. What will the population be after 1 year?
24. 24.What amount will ₹13700 grow to in 1 year at 20% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹36800 at 15% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹17500 at 10% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹37200 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹55000 at 5% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹45200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹10000 grow to in 2 years at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹37100 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹32500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹44800 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹34400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹57100. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹29200 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹59200 at 25% per year for 2 years (in ₹)?

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