Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 200 · 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 ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
3. 3.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹50500 grow to in 1 year at 12% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹52000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹32800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹10400 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹22000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
12. 12.What amount will ₹56900 grow to in 2 years at 20% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹51200 at 25% per year for 3 years, compounded every year (in ₹).
14. 14.A scooter is worth ₹15000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
15. 15.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹54900 at 12% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹23400 grow to in 1 year at 25% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹53100 at 15% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹56000 grow to in 1 year at 25% per year compound interest (in ₹)?
20. 20.A town has 18200 people. The population grows by 5% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹42500 at 20% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹54400 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹18800 at 5% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 47500 people. The population grows by 4% every year. What will the population be after 2 years?
25. 25.A town has 8300 people. The population grows by 25% 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 ₹37500 at 12% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹26000 grow to in 2 years at 15% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹22000 at 5% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹19200 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹17200 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹8700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
34. 34.Find the compound interest on ₹26100 at 10% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹14300 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹7300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹31100 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).

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