Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 735 · 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 ₹10500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
2. 2.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
3. 3.A scooter is worth ₹12000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
4. 4.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
6. 6.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹12400 at 5% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹8500 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹45900 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹10000 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹12700 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹49300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
13. 13.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹8200 at 10% per year for 2 years (in ₹)?
16. 16.A town has 23200 people. The population grows by 15% every year. What will the population be after 2 years?
17. 17.What amount will ₹29500 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.What amount will ₹29300 grow to in 2 years at 10% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹50000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
21. 21.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹45000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹5100 at 4% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹49000 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹57000 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹27100 at 15% per year for 1 year, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹37600 at 5% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹20300 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹44100 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What amount will ₹37600 grow to in 2 years at 25% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹12800 at 10% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
37. 37.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
38. 38.A scooter is worth ₹5900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹12000 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?

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