Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 515 · 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 ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹27600 at 5% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹21400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹42100 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹25300 at 4% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹34700 grow to in 1 year at 25% per year compound interest (in ₹)?
7. 7.What amount will ₹19000 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹6800 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
12. 12.A scooter is worth ₹30100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹55600 at 25% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹40900 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹12300 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
18. 18.A town has 7100 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.A town has 35200 people. The population grows by 5% every year. What will the population be after 1 year?
20. 20.What amount will ₹35000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹35200 at 25% per year for 3 years, compounded every year (in ₹).
22. 22.A town has 25600 people. The population grows by 25% every year. What will the population be after 3 years?
23. 23.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹47500 at 12% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹28100 grow to in 1 year at 25% per year compound interest (in ₹)?
26. 26.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A town has 9200 people. The population grows by 20% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.A town has 22500 people. The population grows by 12% every year. What will the population be after 2 years?
30. 30.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹28500 grow to in 1 year at 20% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹46300 at 8% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹7400 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹30800 at 5% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹56000 at 5% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
39. 39.A town has 46800 people. The population grows by 25% every year. What will the population be after 2 years?
40. 40.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).

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