Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 782 · 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 ₹57400 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹46000 at 20% per year for 3 years, compounded every year (in ₹).
3. 3.A town has 11200 people. The population grows by 25% every year. What will the population be after 2 years?
4. 4.What amount will ₹13400 grow to in 1 year at 20% per year compound interest (in ₹)?
5. 5.What amount will ₹56000 grow to in 3 years at 25% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
7. 7.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹46800 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹47600 at 20% per year for 2 years (in ₹)?
12. 12.A scooter is worth ₹4700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹30000 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹47200 grow to in 1 year at 15% per year compound interest (in ₹)?
16. 16.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹21400 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹34400 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹19200 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹27000 grow to in 1 year at 25% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹41100 at 20% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹55500 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹4000 at 15% per year for 2 years (in ₹)?
27. 27.What amount will ₹33700 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.A town has 17600 people. The population grows by 25% every year. What will the population be after 3 years?
29. 29.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹50000 at 5% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹20000 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 42500 people. The population grows by 8% every year. What will the population be after 2 years?
34. 34.A town has 43000 people. The population grows by 10% every year. What will the population be after 3 years?
35. 35.Find the compound interest on ₹46800 at 25% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹57600 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹23600 at 10% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹40800 at 5% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?

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