Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 767 · 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 ₹37000 at 8% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹13700 at 25% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 12000 people. The population grows by 15% every year. What will the population be after 2 years?
5. 5.A town has 23900 people. The population grows by 5% 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 ₹45000 at 12% per year for 2 years (in ₹)?
7. 7.What amount will ₹13300 grow to in 2 years at 10% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹20800 grow to in 1 year at 10% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹2800 at 15% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹42600 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹31100 at 8% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.A town has 20000 people. The population grows by 8% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹17600 at 15% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹15000 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹10700 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹23200 grow to in 2 years at 5% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹53900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
24. 24.A town has 43700 people. The population grows by 20% every year. What will the population be after 1 year?
25. 25.Find the compound interest on ₹56500 at 4% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹56000 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹57900 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹22900 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹5500 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹49200 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹39100 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹3700 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹52000 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹11600 at 15% per year for 2 years (in ₹)?
40. 40.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?

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