Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 574 · 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 ₹39200 at 25% per year for 2 years, compounded every year (in ₹).
2. 2.A scooter is worth ₹7600. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹25700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
5. 5.A town has 43600 people. The population grows by 5% every year. What will the population be after 2 years?
6. 6.A scooter is worth ₹17400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹58000 at 15% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹5600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
9. 9.A scooter is worth ₹33000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
10. 10.A town has 48600 people. The population grows by 10% every year. What will the population be after 1 year?
11. 11.A scooter is worth ₹58800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹56300 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹36000 grow to in 2 years at 10% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹37400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
15. 15.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
16. 16.A scooter is worth ₹55000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.A scooter is worth ₹6700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
18. 18.What amount will ₹4800 grow to in 2 years at 10% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹14700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
20. 20.Find the compound interest on ₹5800 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹30000 at 25% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹15000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
24. 24.A town has 24600 people. The population grows by 5% every year. What will the population be after 1 year?
25. 25.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹9400 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹16800 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹21800 at 8% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹19200 at 10% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹44800 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.What amount will ₹18600 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹58900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
35. 35.A town has 56400 people. The population grows by 8% every year. What will the population be after 1 year?
36. 36.What is the difference between the compound interest and the simple interest on ₹12800 at 5% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹45600 at 5% per year for 2 years (in ₹)?
38. 38.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
39. 39.Find the compound interest on ₹52300 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹7400 at 12% per year for 1 year, compounded every year (in ₹).

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