Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 623 · 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 town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹53700 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 ₹20900 at 20% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹6400 at 5% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹4000 grow to in 2 years at 25% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹8200 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹26100 at 10% per year for 2 years (in ₹)?
9. 9.What amount will ₹2000 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹49200 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹33100 grow to in 1 year at 25% per year compound interest (in ₹)?
12. 12.What amount will ₹55300 grow to in 1 year at 15% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹27000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹13500 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹35200 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹21500 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹11000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹50000 at 5% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹41100 grow to in 2 years at 10% per year compound interest (in ₹)?
21. 21.What amount will ₹57400 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹34500. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹43200 at 25% per year for 2 years (in ₹)?
24. 24.What amount will ₹59400 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
26. 26.A town has 9100 people. The population grows by 5% every year. What will the population be after 1 year?
27. 27.Find the compound interest on ₹35700 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹2200 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹57600 at 25% per year for 3 years, compounded every year (in ₹).
30. 30.What amount will ₹59800 grow to in 1 year at 12% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹56400 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹12600 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹39300 grow to in 2 years at 20% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹7500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
36. 36.What amount will ₹2800 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹14400 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).

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