Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 723 · 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 ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹23000 at 10% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹33000 at 20% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹33200 at 10% per year for 2 years (in ₹)?
5. 5.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹23300 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
8. 8.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
9. 9.A town has 47100 people. The population grows by 4% every year. What will the population be after 1 year?
10. 10.A town has 12200 people. The population grows by 20% every year. What will the population be after 2 years?
11. 11.What amount will ₹11300 grow to in 1 year at 12% per year compound interest (in ₹)?
12. 12.What amount will ₹27000 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹51000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹11200 grow to in 3 years at 25% per year compound interest (in ₹)?
15. 15.What amount will ₹34000 grow to in 2 years at 15% per year compound interest (in ₹)?
16. 16.What amount will ₹57000 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.What amount will ₹21000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹57500 at 8% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹46000 at 5% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹36000 at 5% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹27300 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
24. 24.A town has 45300 people. The population grows by 10% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
27. 27.A town has 13300 people. The population grows by 20% every year. What will the population be after 1 year?
28. 28.A town has 22500 people. The population grows by 8% every year. What will the population be after 2 years?
29. 29.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
32. 32.What amount will ₹32900 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹7700 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹43200 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹43200 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.A town has 35000 people. The population grows by 4% every year. What will the population be after 2 years?
37. 37.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹9800 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹49300 at 12% per year for 1 year, compounded every year (in ₹).

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