Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 60 · 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 ₹20700 at 15% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹57500 at 12% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
4. 4.What amount will ₹7500 grow to in 3 years at 20% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹2400 at 15% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹11900 grow to in 1 year at 15% per year compound interest (in ₹)?
9. 9.What amount will ₹40600 grow to in 1 year at 10% per year compound interest (in ₹)?
10. 10.A town has 56000 people. The population grows by 20% every year. What will the population be after 3 years?
11. 11.What amount will ₹47900 grow to in 1 year at 25% per year compound interest (in ₹)?
12. 12.What amount will ₹11600 grow to in 1 year at 10% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹31200 at 25% per year for 2 years (in ₹)?
14. 14.What amount will ₹34000 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.What amount will ₹19600 grow to in 2 years at 25% per year compound interest (in ₹)?
17. 17.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹27000 grow to in 1 year at 8% per year compound interest (in ₹)?
20. 20.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹5500 at 20% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹38400 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹11200 at 25% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹51000 at 10% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹46400 at 20% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹25300 at 10% per year for 2 years (in ₹)?
27. 27.A town has 48800 people. The population grows by 25% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹16000 at 25% per year for 2 years (in ₹)?
29. 29.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹14300 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹4500 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹41200 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹25600 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹21100 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹7900 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 ₹12500 at 12% per year for 2 years (in ₹)?
40. 40.A town has 33900 people. The population grows by 15% every year. What will the population be after 1 year?

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