Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 312 · 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 ₹24100 at 8% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹49600 grow to in 1 year at 15% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹59400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
5. 5.A scooter is worth ₹17800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹25200 at 25% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹6800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
10. 10.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
11. 11.A town has 16000 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹25000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹27500 at 4% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹54400 grow to in 3 years at 25% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹34800 at 25% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹57000 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹10500 at 20% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹19600 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹24800 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹55900 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹10900 grow to in 1 year at 12% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹29400 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.A town has 24000 people. The population grows by 25% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹7700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹43100 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹52600 grow to in 1 year at 15% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹36400 at 5% per year for 2 years (in ₹)?
33. 33.A town has 39400 people. The population grows by 25% every year. What will the population be after 1 year?
34. 34.What amount will ₹59500 grow to in 3 years at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹44400 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.What amount will ₹21500 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.What amount will ₹42800 grow to in 2 years at 25% per year compound interest (in ₹)?
38. 38.What amount will ₹34000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹6300 at 15% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 40400 people. The population grows by 4% every year. What will the population be after 1 year?

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