Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 35 · 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 ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
2. 2.A town has 20300 people. The population grows by 25% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹14700 at 10% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹21200 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹16600 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹21200 at 15% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹32000 at 5% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹60000 at 5% per year for 2 years (in ₹)?
11. 11.What amount will ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹38600 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹56500 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹37400 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹26000 at 15% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹27800 at 20% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹52000 at 15% per year for 2 years (in ₹)?
20. 20.What amount will ₹5000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.What amount will ₹24800 grow to in 1 year at 12% per year compound interest (in ₹)?
22. 22.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹44300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹45200 at 5% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹20700 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹26000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹54300 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹42500 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.What amount will ₹57300 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹55900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
35. 35.A town has 37500 people. The population grows by 10% every year. What will the population be after 1 year?
36. 36.Find the compound interest on ₹40000 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹13200 at 15% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹56300 at 10% per year for 2 years (in ₹)?
39. 39.A town has 48200 people. The population grows by 20% every year. What will the population be after 2 years?
40. 40.Find the compound interest on ₹33800 at 8% per year for 1 year, compounded every year (in ₹).

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