Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 495 · 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 ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
2. 2.A town has 26600 people. The population grows by 10% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹24800 at 15% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹2300 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹19000 at 10% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹55000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹44500 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹8400 at 5% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹18400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
12. 12.What amount will ₹45600 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
16. 16.What amount will ₹33600 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹57900 at 20% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹2800 grow to in 2 years at 5% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹12100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
20. 20.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹29100 at 12% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹6400 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.What amount will ₹33700 grow to in 1 year at 10% per year compound interest (in ₹)?
24. 24.A town has 59200 people. The population grows by 15% every year. What will the population be after 2 years?
25. 25.A town has 38600 people. The population grows by 10% every year. What will the population be after 1 year?
26. 26.What is the difference between the compound interest and the simple interest on ₹34000 at 25% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹50800 at 25% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹35200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹44900 grow to in 1 year at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹56700 grow to in 2 years at 10% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹22900 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹17600 grow to in 2 years at 20% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
38. 38.What amount will ₹59500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹52900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
40. 40.A town has 44300 people. The population grows by 20% every year. What will the population be after 2 years?

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