Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 928 · 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 ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.A scooter is worth ₹43200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
3. 3.Find the compound interest on ₹24300 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹15200 at 15% per year for 2 years (in ₹)?
5. 5.What amount will ₹33600 grow to in 2 years at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹12800 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.A town has 17300 people. The population grows by 5% every year. What will the population be after 1 year?
8. 8.What amount will ₹50400 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹36100 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹28100 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹56700 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹42500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹40900 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹11600 at 25% per year for 2 years (in ₹)?
15. 15.What amount will ₹43800 grow to in 1 year at 8% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹2800 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹59800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
21. 21.A scooter is worth ₹32500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹16900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹13600 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 47500 people. The population grows by 20% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹5200 at 5% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹18600 at 8% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹6400 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹41200 at 15% per year for 2 years (in ₹)?
31. 31.What amount will ₹36800 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹24200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹27600 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.A town has 15200 people. The population grows by 15% every year. What will the population be after 2 years?
35. 35.What amount will ₹54300 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹19100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹53300 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.A town has 3900 people. The population grows by 20% every year. What will the population be after 2 years?
39. 39.What amount will ₹2500 grow to in 1 year at 10% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹58800 at 12% per year for 1 year, compounded every year (in ₹).

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