Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 816 · 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 ₹46200 at 20% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹31400 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹16000 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹15400 grow to in 1 year at 4% per year compound interest (in ₹)?
5. 5.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹7300 at 20% per year for 2 years (in ₹)?
7. 7.What amount will ₹46400 grow to in 3 years at 25% per year compound interest (in ₹)?
8. 8.What amount will ₹16900 grow to in 1 year at 20% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹54000 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹21200 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹59600 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.What amount will ₹12300 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
14. 14.A town has 56000 people. The population grows by 10% every year. What will the population be after 3 years?
15. 15.A town has 40700 people. The population grows by 15% every year. What will the population be after 1 year?
16. 16.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹35900 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹36600 at 4% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹4600 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 41000 people. The population grows by 10% every year. What will the population be after 3 years?
22. 22.A town has 13100 people. The population grows by 25% every year. What will the population be after 1 year?
23. 23.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹5800 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.A town has 28400 people. The population grows by 10% every year. What will the population be after 1 year?
27. 27.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹22500 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
32. 32.What amount will ₹29900 grow to in 1 year at 15% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹8000 at 5% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹34000 at 25% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹24800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹24800 at 25% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹6300 at 10% per year for 2 years (in ₹)?

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