Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 510 · 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 ₹39700 at 25% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹20800 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹5000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹11600 at 5% per year for 2 years (in ₹)?
6. 6.What amount will ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹7700 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹36400 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?
10. 10.What amount will ₹44800 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹6500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 36000 people. The population grows by 20% every year. What will the population be after 3 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹59300 at 10% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹24200 at 5% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹33600 at 4% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹39500 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹58800 grow to in 1 year at 8% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹57500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
22. 22.A town has 32400 people. The population grows by 25% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
24. 24.What amount will ₹43300 grow to in 1 year at 15% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹34400 at 25% per year for 2 years, compounded every year (in ₹).
26. 26.A town has 6400 people. The population grows by 25% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
28. 28.A town has 54800 people. The population grows by 15% every year. What will the population be after 2 years?
29. 29.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
30. 30.What is the difference between the compound interest and the simple interest on ₹14600 at 20% per year for 2 years (in ₹)?
31. 31.What amount will ₹30000 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.A town has 36000 people. The population grows by 15% every year. What will the population be after 2 years?
33. 33.Find the compound interest on ₹40800 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
35. 35.What amount will ₹39300 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹33600 at 20% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹2000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹58000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹47000 at 10% per year for 3 years, compounded every year (in ₹).

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