Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 714 · 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 ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹23500 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹36100 grow to in 1 year at 10% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹32400. Its value falls by 5% 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 ₹21200 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹9200 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹41900 at 10% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
12. 12.What amount will ₹39000 grow to in 1 year at 10% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹53300 at 10% per year for 2 years (in ₹)?
14. 14.A town has 17500 people. The population grows by 4% every year. What will the population be after 2 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹35800 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.A town has 3000 people. The population grows by 5% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹7300 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?
22. 22.What amount will ₹44200 grow to in 1 year at 12% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹48400 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.What amount will ₹22000 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹38500 at 12% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹12700 at 10% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹10000 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹38700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
34. 34.A town has 8000 people. The population grows by 20% every year. What will the population be after 3 years?
35. 35.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
36. 36.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
37. 37.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹40000 grow to in 2 years at 8% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹11300. Its value falls by 8% 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 ₹12000 at 25% per year for 2 years (in ₹)?

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