Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 262 · 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 ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹3500 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹22400 at 15% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹32000 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹34300. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
6. 6.A scooter is worth ₹28400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹40900 grow to in 1 year at 8% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹14900 at 20% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹31500 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.A scooter is worth ₹12000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
11. 11.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹9200 at 20% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹37200 at 25% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 46400 people. The population grows by 25% every year. What will the population be after 3 years?
18. 18.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹30000 at 25% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹35200 at 5% per year for 2 years (in ₹)?
25. 25.What amount will ₹29000 grow to in 1 year at 15% per year compound interest (in ₹)?
26. 26.What amount will ₹25600 grow to in 2 years at 5% per year compound interest (in ₹)?
27. 27.A town has 45700 people. The population grows by 20% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹42000 at 10% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹25300 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹46400 at 10% per year for 2 years (in ₹)?
32. 32.What amount will ₹2800 grow to in 2 years at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹2800 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹36500 at 12% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹19200 at 10% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹42100 at 12% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹25800 at 15% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹2300 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹40000 at 5% per year for 1 year, compounded every year (in ₹).

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