Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 698 · 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 ₹2500 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
4. 4.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹40700 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹7200 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹34400 grow to in 2 years at 15% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹44500 at 25% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹54500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
12. 12.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹27000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
14. 14.What amount will ₹51000 grow to in 3 years at 10% per year compound interest (in ₹)?
15. 15.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.What amount will ₹21400 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹55300 at 10% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
19. 19.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
21. 21.What amount will ₹9800 grow to in 1 year at 25% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹47600 at 5% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹25500 at 8% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹59000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹36100 at 20% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹24100 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹34300 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹31600 at 25% per year for 2 years (in ₹)?
33. 33.What amount will ₹58700 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What amount will ₹3200 grow to in 1 year at 4% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹9700 at 12% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹20900 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.A town has 38400 people. The population grows by 25% every year. What will the population be after 3 years?
38. 38.What amount will ₹6400 grow to in 3 years at 25% per year compound interest (in ₹)?
39. 39.What amount will ₹30400 grow to in 2 years at 5% per year compound interest (in ₹)?
40. 40.What amount will ₹47500 grow to in 1 year at 4% per year compound interest (in ₹)?

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