Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 664 · 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.What is the difference between the compound interest and the simple interest on ₹14200 at 10% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹57600 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹19000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
5. 5.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.What amount will ₹35000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹10500 at 25% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹19600 at 15% per year for 2 years (in ₹)?
9. 9.What amount will ₹18400 grow to in 2 years at 25% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹55900 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹11000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
12. 12.What amount will ₹5000 grow to in 1 year at 8% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹4100 at 10% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹46100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
16. 16.What amount will ₹23600 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹15700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
19. 19.A town has 5400 people. The population grows by 10% every year. What will the population be after 2 years?
20. 20.What amount will ₹2100 grow to in 1 year at 15% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 49300 people. The population grows by 20% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹56500 at 20% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹49400 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹53100 at 10% per year for 2 years (in ₹)?
27. 27.A town has 16000 people. The population grows by 25% every year. What will the population be after 1 year?
28. 28.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹37100 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹39800 at 20% per year for 2 years (in ₹)?
31. 31.What amount will ₹26500 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.A town has 18500 people. The population grows by 20% every year. What will the population be after 3 years?
33. 33.Find the compound interest on ₹37500 at 12% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹20800 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹2800 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What amount will ₹4700 grow to in 1 year at 15% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹10100. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹27500 at 4% per year for 2 years, compounded every year (in ₹).

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