Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 140 · 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.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹24400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹22000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹51200 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹34000 at 25% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹38400 at 25% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹13600 at 5% per year for 2 years (in ₹)?
8. 8.What amount will ₹8000 grow to in 1 year at 20% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹6800 at 15% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
12. 12.What amount will ₹56000 grow to in 1 year at 15% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹51000 at 10% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹16800 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹25200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹45400 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.A town has 38600 people. The population grows by 10% every year. What will the population be after 2 years?
18. 18.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹52000 at 10% per year for 3 years, compounded every year (in ₹).
20. 20.A town has 10000 people. The population grows by 4% every year. What will the population be after 2 years?
21. 21.Find the compound interest on ₹40000 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹40500 grow to in 2 years at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹16800 at 25% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.A town has 1600 people. The population grows by 25% every year. What will the population be after 3 years?
26. 26.A town has 32500 people. The population grows by 4% every year. What will the population be after 2 years?
27. 27.What amount will ₹47200 grow to in 1 year at 25% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹29100 at 20% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹22700 at 10% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹49600 at 25% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹32500 at 20% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹4500 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹57500 at 20% per year for 3 years, compounded every year (in ₹).
37. 37.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
38. 38.What amount will ₹40400 grow to in 2 years at 15% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹47600 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹16900 grow to in 1 year at 12% per year compound interest (in ₹)?

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