Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 194 · 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 ₹18000 at 5% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹4700 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹27800 grow to in 2 years at 10% per year compound interest (in ₹)?
5. 5.What amount will ₹11600 grow to in 1 year at 5% per year compound interest (in ₹)?
6. 6.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.What amount will ₹54600 grow to in 1 year at 10% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹56000 at 25% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹7900 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹13900 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹26800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹5600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
15. 15.What amount will ₹50000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.A town has 35000 people. The population grows by 4% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹6000 at 20% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹44000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.What amount will ₹39100 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹2400 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹11900 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹42400 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹59000 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹36900 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹54100 at 12% per year for 1 year, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹53600 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.A scooter is worth ₹17300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹44800 grow to in 2 years at 15% per year compound interest (in ₹)?
33. 33.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
34. 34.What amount will ₹54200 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.What amount will ₹53000 grow to in 3 years at 20% per year compound interest (in ₹)?
36. 36.A town has 3600 people. The population grows by 20% every year. What will the population be after 2 years?
37. 37.A town has 3000 people. The population grows by 20% every year. What will the population be after 3 years?
38. 38.A town has 22500 people. The population grows by 12% every year. What will the population be after 2 years?
39. 39.What is the difference between the compound interest and the simple interest on ₹28000 at 5% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹23200 at 25% per year for 2 years (in ₹)?

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