Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 239 · 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 ₹10500 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹43800 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹58900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹12400 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹15200 at 5% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹36000 at 5% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹56400 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 12000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.What amount will ₹44000 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹52500 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹58500 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹26800 at 15% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹27200 at 15% per year for 2 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹6800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
17. 17.What amount will ₹26400 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹55600 at 5% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹19000 at 20% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹41400 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹15700 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹35400 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹56000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
25. 25.What amount will ₹47600 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.A town has 46400 people. The population grows by 10% every year. What will the population be after 2 years?
27. 27.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
28. 28.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
29. 29.What is the difference between the compound interest and the simple interest on ₹46000 at 5% per year for 2 years (in ₹)?
30. 30.What amount will ₹33600 grow to in 1 year at 4% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹23000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.A scooter is worth ₹21100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
33. 33.Find the compound interest on ₹28800 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹2200 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹22800 at 5% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
39. 39.A town has 3200 people. The population grows by 15% every year. What will the population be after 2 years?
40. 40.What is the difference between the compound interest and the simple interest on ₹2800 at 5% per year for 2 years (in ₹)?

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