Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 238 · 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 ₹5800 at 8% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹12900 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹38300 at 20% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹9800 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹5400 at 25% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 34800 people. The population grows by 15% every year. What will the population be after 1 year?
12. 12.What is the difference between the compound interest and the simple interest on ₹56000 at 15% per year for 2 years (in ₹)?
13. 13.A town has 5000 people. The population grows by 4% every year. What will the population be after 2 years?
14. 14.A town has 7500 people. The population grows by 8% every year. What will the population be after 2 years?
15. 15.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹22300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
18. 18.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
19. 19.A town has 9800 people. The population grows by 25% every year. What will the population be after 1 year?
20. 20.A town has 43200 people. The population grows by 15% every year. What will the population be after 2 years?
21. 21.A town has 15200 people. The population grows by 5% every year. What will the population be after 2 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹52700 at 10% per year for 2 years (in ₹)?
23. 23.What amount will ₹51000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.A town has 50000 people. The population grows by 10% every year. What will the population be after 3 years?
25. 25.What amount will ₹10300 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.What amount will ₹23300 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹24100 at 20% per year for 2 years (in ₹)?
29. 29.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹14100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹46700 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 17600 people. The population grows by 15% every year. What will the population be after 2 years?
33. 33.What amount will ₹36800 grow to in 2 years at 25% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹36800 at 25% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹9200 at 25% per year for 2 years (in ₹)?
36. 36.A town has 42000 people. The population grows by 10% every year. What will the population be after 3 years?
37. 37.What is the difference between the compound interest and the simple interest on ₹30000 at 5% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹15100 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹38400 at 15% per year for 2 years (in ₹)?
40. 40.A town has 36800 people. The population grows by 5% every year. What will the population be after 2 years?

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