Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 551 · 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 ₹17900 at 20% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹20500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹17500 at 20% per year for 3 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹33200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹29200 at 5% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹12300 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
9. 9.A town has 44800 people. The population grows by 25% every year. What will the population be after 3 years?
10. 10.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹18200 grow to in 1 year at 4% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹33600 at 5% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹34400 at 10% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹11000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹29200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
16. 16.Find the compound interest on ₹58400 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹20100 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹59200 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹14500 at 20% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹10400 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹9600 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹31500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹18000 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹4800 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹22500 at 20% per year for 2 years (in ₹)?
28. 28.What amount will ₹44800 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹8800 at 5% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
31. 31.A scooter is worth ₹58900. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹10000 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
35. 35.A town has 52000 people. The population grows by 10% every year. What will the population be after 3 years?
36. 36.What amount will ₹45000 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.A town has 37800 people. The population grows by 12% every year. What will the population be after 1 year?
38. 38.What amount will ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹55000 at 10% per year for 3 years, compounded every year (in ₹).

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