Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 721 · 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 ₹15000 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹27600 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹11900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
5. 5.A town has 48200 people. The population grows by 15% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹39600 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.A town has 30400 people. The population grows by 25% every year. What will the population be after 3 years?
9. 9.A town has 32800 people. The population grows by 15% every year. What will the population be after 2 years?
10. 10.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹23400 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹4000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹55000 at 12% per year for 2 years, compounded every year (in ₹).
16. 16.A town has 33300 people. The population grows by 10% every year. What will the population be after 2 years?
17. 17.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹13000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
20. 20.Find the compound interest on ₹57600 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 53600 people. The population grows by 5% every year. What will the population be after 2 years?
22. 22.A town has 25000 people. The population grows by 5% every year. What will the population be after 1 year?
23. 23.Find the compound interest on ₹46800 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
25. 25.What amount will ₹22100 grow to in 1 year at 10% per year compound interest (in ₹)?
26. 26.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹5900 at 15% per year for 1 year, compounded every year (in ₹).
28. 28.A town has 18800 people. The population grows by 12% every year. What will the population be after 1 year?
29. 29.A town has 44800 people. The population grows by 5% every year. What will the population be after 2 years?
30. 30.What amount will ₹2000 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.A town has 56700 people. The population grows by 5% every year. What will the population be after 1 year?
32. 32.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.A town has 57200 people. The population grows by 10% every year. What will the population be after 2 years?
34. 34.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹2400 at 15% per year for 2 years (in ₹)?
36. 36.A town has 9900 people. The population grows by 15% every year. What will the population be after 1 year?
37. 37.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹43500 grow to in 2 years at 20% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).

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