Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 621 · 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 ₹50400 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹53100 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
4. 4.Find the compound interest on ₹39000 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹44800 at 10% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹19200. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
8. 8.What amount will ₹33700 grow to in 1 year at 4% per year compound interest (in ₹)?
9. 9.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹51400 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹17600 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹23600 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹30800 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹32500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.Find the compound interest on ₹21000 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹37800 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹2800 grow to in 1 year at 10% per year compound interest (in ₹)?
23. 23.What amount will ₹8000 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.What amount will ₹9600 grow to in 3 years at 25% per year compound interest (in ₹)?
25. 25.What amount will ₹10300 grow to in 1 year at 15% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹11300 at 10% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹34900 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹27500 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 55700 people. The population grows by 20% every year. What will the population be after 1 year?
31. 31.A scooter is worth ₹46900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹60000 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.A town has 53500 people. The population grows by 20% every year. What will the population be after 3 years?
34. 34.A town has 18600 people. The population grows by 20% every year. What will the population be after 2 years?
35. 35.A scooter is worth ₹27800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹16700 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹39900 at 20% per year for 2 years, compounded every year (in ₹).
39. 39.A town has 30100 people. The population grows by 10% every year. What will the population be after 1 year?
40. 40.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).

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