Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 66 · 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.A scooter is worth ₹35100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹56800 at 5% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹54700 at 10% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 10200 people. The population grows by 8% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹2500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹46700 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.A scooter is worth ₹24000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹16600 grow to in 1 year at 4% per year compound interest (in ₹)?
11. 11.What amount will ₹7700 grow to in 1 year at 15% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹25000 at 10% per year for 3 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹16400 at 4% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹18000 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.A town has 5300 people. The population grows by 10% 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 ₹52500 at 12% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹58900 at 20% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹34800 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹30000 grow to in 3 years at 20% per year compound interest (in ₹)?
27. 27.What amount will ₹31400 grow to in 2 years at 20% per year compound interest (in ₹)?
28. 28.What amount will ₹4100 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.What amount will ₹59300 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹27600 at 25% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹22500 grow to in 1 year at 4% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹44000 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹56400 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹28200 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹59200 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹16500 at 4% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹3500 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹27500 at 4% per year for 2 years, compounded every year (in ₹).

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