Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 259 · 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 ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹27600 grow to in 1 year at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹40100 at 10% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹13000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹40500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
9. 9.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹48400 at 10% per year for 2 years (in ₹)?
11. 11.A town has 35100 people. The population grows by 20% every year. What will the population be after 2 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
14. 14.A town has 20000 people. The population grows by 15% every year. What will the population be after 2 years?
15. 15.What amount will ₹11600 grow to in 2 years at 25% per year compound interest (in ₹)?
16. 16.A town has 22800 people. The population grows by 12% every year. What will the population be after 1 year?
17. 17.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.A town has 3300 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹8800 at 25% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹53700 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹7000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
24. 24.A scooter is worth ₹5200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
25. 25.A town has 50300 people. The population grows by 12% every year. What will the population be after 1 year?
26. 26.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
27. 27.A town has 15800 people. The population grows by 15% every year. What will the population be after 1 year?
28. 28.What amount will ₹9000 grow to in 3 years at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹40200 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹31000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹33200 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹15700 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹24400 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
37. 37.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹24800 at 15% per year for 2 years (in ₹)?
39. 39.What amount will ₹26400 grow to in 1 year at 25% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹16400 at 25% per year for 2 years (in ₹)?

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