Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 908 · 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 ₹39000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹7800 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹22000 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 28000 people. The population grows by 15% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹56000 at 5% per year for 2 years (in ₹)?
8. 8.A town has 21300 people. The population grows by 25% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
10. 10.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹34900 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹48800 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹7500 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹57500 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.A town has 35500 people. The population grows by 20% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹50800 at 25% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹39900 at 10% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹24400 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹45900 at 20% per year for 2 years (in ₹)?
23. 23.A town has 26500 people. The population grows by 10% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹55200 at 10% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹47000 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹33000 at 15% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹19800 at 15% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹46000 grow to in 3 years at 20% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹3000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.A town has 26000 people. The population grows by 8% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹27200 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹51700 at 20% per year for 2 years (in ₹)?
37. 37.A town has 51200 people. The population grows by 25% every year. What will the population be after 3 years?
38. 38.A town has 49900 people. The population grows by 4% every year. What will the population be after 1 year?
39. 39.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹16400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?

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