Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 258 · 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 ₹2500 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹13600 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹4500 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹49300 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹3900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹22000 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
8. 8.A scooter is worth ₹11200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
9. 9.What amount will ₹25700 grow to in 1 year at 4% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹21600 at 15% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹58300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹38100 grow to in 1 year at 15% per year compound interest (in ₹)?
14. 14.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
15. 15.A town has 13800 people. The population grows by 10% every year. What will the population be after 2 years?
16. 16.What amount will ₹8200 grow to in 2 years at 20% per year compound interest (in ₹)?
17. 17.A town has 20000 people. The population grows by 8% every year. What will the population be after 2 years?
18. 18.What amount will ₹16800 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹33200 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 ₹45200 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹57600 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹11800 at 10% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹11500 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹55300 at 12% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹13300 at 4% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹31700 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.A town has 31800 people. The population grows by 12% every year. What will the population be after 1 year?
28. 28.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹32300 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.A scooter is worth ₹2500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
32. 32.A scooter is worth ₹10400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹25100 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹50500 at 20% per year for 3 years, compounded every year (in ₹).
35. 35.A town has 17500 people. The population grows by 8% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹57600 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
39. 39.A town has 26900 people. The population grows by 15% every year. What will the population be after 1 year?
40. 40.Find the compound interest on ₹4100 at 10% per year for 1 year, compounded every year (in ₹).

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