Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 531 · 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.Find the compound interest on ₹29600 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹55900 at 10% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹37600 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹52800 grow to in 3 years at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹48400 at 25% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹8500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
8. 8.A scooter is worth ₹45200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
9. 9.What amount will ₹25200 grow to in 2 years at 10% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹28300 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹52800 at 25% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹38100 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹25500 at 10% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
17. 17.Find the compound interest on ₹4000 at 12% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹55600 grow to in 1 year at 20% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹42000 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹33400 at 10% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
22. 22.A scooter is worth ₹58500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
23. 23.A scooter is worth ₹49000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹6800 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹49200 at 5% per year for 2 years (in ₹)?
26. 26.What amount will ₹56000 grow to in 1 year at 12% per year compound interest (in ₹)?
27. 27.What amount will ₹21300 grow to in 2 years at 10% per year compound interest (in ₹)?
28. 28.A town has 53900 people. The population grows by 4% every year. What will the population be after 1 year?
29. 29.What amount will ₹12700 grow to in 1 year at 8% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹10400 at 25% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?
33. 33.A scooter is worth ₹18000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹18000 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.A town has 60000 people. The population grows by 4% every year. What will the population be after 2 years?
36. 36.What amount will ₹31000 grow to in 1 year at 12% per year compound interest (in ₹)?
37. 37.What amount will ₹4500 grow to in 1 year at 20% per year compound interest (in ₹)?
38. 38.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹28800 at 25% per year for 2 years (in ₹)?
40. 40.What amount will ₹55000 grow to in 3 years at 10% per year compound interest (in ₹)?

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