Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 156 · 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 ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹36900 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹28300 grow to in 1 year at 10% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
7. 7.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹2000 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹2000 at 25% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹1600 at 25% per year for 3 years, compounded every year (in ₹).
12. 12.A town has 42000 people. The population grows by 20% every year. What will the population be after 3 years?
13. 13.Find the compound interest on ₹22100 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 ₹37500 at 8% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹5800 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.Find the compound interest on ₹14000 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹59000 at 10% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
19. 19.What amount will ₹21600 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹13600 at 25% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹59900 at 10% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.A town has 4800 people. The population grows by 5% every year. What will the population be after 2 years?
24. 24.What amount will ₹2400 grow to in 2 years at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹58200 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹26000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹27800 at 12% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹22100 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹2900 at 20% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹17600 grow to in 2 years at 15% per year compound interest (in ₹)?
33. 33.What amount will ₹51200 grow to in 2 years at 25% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹27900 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹2600 grow to in 2 years at 10% 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.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹18100 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
40. 40.A town has 33600 people. The population grows by 10% every year. What will the population be after 1 year?

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