Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 611 · 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 ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹46100 at 25% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹37500 grow to in 2 years at 12% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹13400 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹32200 grow to in 1 year at 5% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹25000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹31300 at 10% per year for 2 years (in ₹)?
9. 9.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
10. 10.A scooter is worth ₹57600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
12. 12.What amount will ₹47800 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹53000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.A scooter is worth ₹12000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
15. 15.A town has 31000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹25000 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹30000 grow to in 2 years at 15% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
20. 20.A town has 53100 people. The population grows by 20% every year. What will the population be after 2 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
22. 22.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹18800 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹14000 at 25% per year for 2 years (in ₹)?
25. 25.What amount will ₹31600 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.A town has 13700 people. The population grows by 10% every year. What will the population be after 1 year?
27. 27.A scooter is worth ₹42500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
28. 28.Find the compound interest on ₹4000 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹8000 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
32. 32.What amount will ₹8400 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹47500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹30900 grow to in 1 year at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹5200 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹52500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹19500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
40. 40.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?

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