Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 950 · 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 ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 35000 people. The population grows by 4% every year. What will the population be after 2 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
4. 4.What amount will ₹28800 grow to in 1 year at 4% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹57400 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
7. 7.What amount will ₹41500 grow to in 2 years at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹17600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹26400 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.What amount will ₹17600 grow to in 2 years at 25% per year compound interest (in ₹)?
13. 13.What amount will ₹4500 grow to in 3 years at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹45200 at 5% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
16. 16.Find the compound interest on ₹50800 at 25% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
18. 18.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹16900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
22. 22.What amount will ₹44000 grow to in 2 years at 5% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹15600 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
25. 25.A town has 47300 people. The population grows by 25% every year. What will the population be after 1 year?
26. 26.A scooter is worth ₹26400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹13600 at 25% per year for 2 years (in ₹)?
29. 29.A town has 17900 people. The population grows by 4% every year. What will the population be after 1 year?
30. 30.What amount will ₹13600 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹54800 at 20% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹35200 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹21200 at 25% per year for 2 years, compounded every year (in ₹).
35. 35.A scooter is worth ₹25000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
37. 37.What amount will ₹29600 grow to in 2 years at 20% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹49700 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹24000 at 10% per year for 3 years, compounded every year (in ₹).

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