Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 798 · 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.What is the difference between the compound interest and the simple interest on ₹22000 at 5% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹58000 at 8% per year for 1 year, compounded every year (in ₹).
3. 3.A scooter is worth ₹35000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
6. 6.A scooter is worth ₹46100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
7. 7.A town has 26500 people. The population grows by 20% every year. What will the population be after 3 years?
8. 8.Find the compound interest on ₹22000 at 15% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹30400 at 15% per year for 2 years (in ₹)?
10. 10.A scooter is worth ₹14400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.A town has 36000 people. The population grows by 15% 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 ₹19200 at 25% per year for 2 years (in ₹)?
13. 13.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
14. 14.What amount will ₹43500 grow to in 3 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.What amount will ₹55000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.What amount will ₹7000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹18700 at 4% per year for 1 year, compounded every year (in ₹).
20. 20.A scooter is worth ₹24800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
21. 21.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹38000 grow to in 2 years at 10% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹13500 at 4% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹56200 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹26100 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.A town has 25300 people. The population grows by 5% 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 ₹50600 at 10% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹36000 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
33. 33.A town has 12100 people. The population grows by 4% every year. What will the population be after 1 year?
34. 34.A scooter is worth ₹4000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
35. 35.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
37. 37.What amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.What amount will ₹1600 grow to in 3 years at 25% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹22900 at 10% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹41600 at 20% per year for 2 years (in ₹)?

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