Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 124 · 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 ₹25000 at 12% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹32500 at 25% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹49900 grow to in 1 year at 25% per year compound interest (in ₹)?
4. 4.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹13300 at 10% per year for 1 year, compounded every year (in ₹).
7. 7.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
8. 8.What amount will ₹44800 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹39100 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹51200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹50400 at 15% per year for 2 years (in ₹)?
12. 12.What amount will ₹25000 grow to in 2 years at 4% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹15000 at 20% per year for 2 years, compounded every year (in ₹).
14. 14.A scooter is worth ₹39200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
15. 15.What amount will ₹24000 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹59500 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹14000 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹37500 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹6000 grow to in 2 years at 25% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹9000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
23. 23.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹34400 at 15% per year for 2 years (in ₹)?
25. 25.A town has 50000 people. The population grows by 12% every year. What will the population be after 2 years?
26. 26.What amount will ₹4800 grow to in 2 years at 5% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹33600 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹59000 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹9700 grow to in 2 years at 20% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹23200 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.A scooter is worth ₹19900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
33. 33.A scooter is worth ₹16700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹53500 at 10% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹36800 at 15% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
37. 37.A town has 33500 people. The population grows by 20% every year. What will the population be after 3 years?
38. 38.A scooter is worth ₹15400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹4000 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?

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