Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 904 · 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 ₹51100 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹43000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹30900 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 55000 people. The population grows by 4% every year. What will the population be after 2 years?
6. 6.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹29600 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹51600 at 5% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹15200 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹34500 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹21800 at 20% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹39200 grow to in 1 year at 10% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
16. 16.What amount will ₹52100 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹57500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
18. 18.What amount will ₹46200 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹33000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹42300 at 20% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.What amount will ₹29600 grow to in 2 years at 5% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹10000 at 15% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹25000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹27600 at 25% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.A town has 26100 people. The population grows by 10% every year. What will the population be after 2 years?
29. 29.A scooter is worth ₹46000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
30. 30.Find the compound interest on ₹37200 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹26800 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹34600 grow to in 1 year at 8% per year compound interest (in ₹)?
33. 33.A town has 14400 people. The population grows by 10% every year. What will the population be after 2 years?
34. 34.What amount will ₹26600 grow to in 1 year at 20% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹14800 at 5% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹33600 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹36300 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹53200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?

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