Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 54 · 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 ₹2700 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹31600 at 20% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹40900 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹34100 grow to in 1 year at 8% per year compound interest (in ₹)?
7. 7.What amount will ₹51600 grow to in 2 years at 15% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹45000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹52800 at 25% per year for 2 years (in ₹)?
11. 11.What amount will ₹56000 grow to in 2 years at 15% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹21600 at 15% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹9200 at 5% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹16100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
15. 15.A town has 54000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹40800 grow to in 1 year at 25% per year compound interest (in ₹)?
18. 18.What amount will ₹54400 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹59500 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹5100 at 20% per year for 2 years (in ₹)?
22. 22.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹51600 at 15% per year for 2 years (in ₹)?
25. 25.A town has 30600 people. The population grows by 20% every year. What will the population be after 2 years?
26. 26.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹6700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹40800 at 10% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹52000 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.A town has 33500 people. The population grows by 4% every year. What will the population be after 1 year?
33. 33.A scooter is worth ₹35000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹48100 at 20% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹5200 at 20% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹49200 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹7600 grow to in 2 years at 5% per year compound interest (in ₹)?

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