Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 145 · 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 is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹4800 at 25% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹39400 at 4% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹55600 at 25% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹4100 at 20% per year for 2 years (in ₹)?
7. 7.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹28000 at 25% per year for 2 years (in ₹)?
9. 9.A town has 36400 people. The population grows by 25% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹40200 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹5400 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹48200 at 10% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹45500 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹13100 grow to in 1 year at 12% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹5900 at 10% per year for 1 year, compounded every year (in ₹).
17. 17.A scooter is worth ₹45600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
18. 18.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹11600 at 20% per year for 2 years (in ₹)?
20. 20.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹24100 at 20% per year for 2 years (in ₹)?
22. 22.A town has 12700 people. The population grows by 20% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹15500 at 10% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
25. 25.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
26. 26.What amount will ₹2000 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹14100 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹32400 at 25% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹22900 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹17400 at 4% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹36800 grow to in 2 years at 25% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹36100 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹4800 at 12% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹11600 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹23700 at 12% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 6000 people. The population grows by 15% every year. What will the population be after 2 years?

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