Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 602 · 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 amount will ₹40000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹51500 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹40400 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.A scooter is worth ₹54400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
5. 5.Find the compound interest on ₹22500 at 10% per year for 1 year, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
7. 7.What amount will ₹5400 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹26400 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.A scooter is worth ₹8000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
10. 10.A scooter is worth ₹55000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
11. 11.What amount will ₹8400 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹48900 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹20000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
16. 16.Find the compound interest on ₹10500 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹14700 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹48700 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹30000 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 32000 people. The population grows by 20% every year. What will the population be after 2 years?
21. 21.Find the compound interest on ₹22600 at 15% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
23. 23.A town has 31600 people. The population grows by 25% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹30800 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹28300 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
28. 28.What amount will ₹40800 grow to in 2 years at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹17500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹33600 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹23700 grow to in 1 year at 8% per year compound interest (in ₹)?
33. 33.What amount will ₹15000 grow to in 1 year at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹30000 at 25% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹33200 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹16000 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹54500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹41400 at 10% per year for 2 years (in ₹)?

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