Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 330 · 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 is the difference between the compound interest and the simple interest on ₹22800 at 15% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹48500 at 20% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
4. 4.What amount will ₹52000 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹21600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹58800 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What amount will ₹17500 grow to in 2 years at 4% per year compound interest (in ₹)?
8. 8.What amount will ₹51700 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹34800 at 25% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹30500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
16. 16.A town has 46800 people. The population grows by 5% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹11000 at 10% per year for 2 years (in ₹)?
18. 18.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
19. 19.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹18400 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹5200 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹32000 at 25% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹54400 at 5% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹41600 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
29. 29.What amount will ₹46400 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹2800 grow to in 1 year at 25% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹7000 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹7000 grow to in 3 years at 10% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹43000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
35. 35.Find the compound interest on ₹30300 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹28300 at 10% per year for 2 years (in ₹)?
37. 37.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.A town has 42000 people. The population grows by 8% every year. What will the population be after 1 year?
39. 39.A town has 9800 people. The population grows by 25% every year. What will the population be after 1 year?
40. 40.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?

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