Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 715 · 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.A scooter is worth ₹59300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
2. 2.Find the compound interest on ₹41700 at 8% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹54000 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹44500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
5. 5.What amount will ₹2000 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹39800 at 10% per year for 2 years (in ₹)?
7. 7.What amount will ₹18200 grow to in 1 year at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹18500 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹50500 at 10% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹44700 at 10% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
14. 14.A town has 19000 people. The population grows by 10% every year. What will the population be after 3 years?
15. 15.What amount will ₹12300 grow to in 1 year at 12% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹15700 at 12% per year for 1 year, compounded every year (in ₹).
17. 17.A scooter is worth ₹55700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹41000 at 10% per year for 2 years (in ₹)?
19. 19.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹35900 at 20% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹28000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
24. 24.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹18800 at 20% per year for 2 years (in ₹)?
26. 26.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹32400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
29. 29.A town has 44500 people. The population grows by 20% every year. What will the population be after 3 years?
30. 30.A town has 42800 people. The population grows by 8% every year. What will the population be after 1 year?
31. 31.Find the compound interest on ₹23500 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹8300 grow to in 1 year at 12% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹51000 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹23900 at 10% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹44700 at 20% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹34400 at 15% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹56800 at 15% per year for 2 years (in ₹)?
40. 40.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?

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