Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 850 · 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 ₹26800 at 15% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹15100 at 20% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹28800 at 5% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹15000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹8400 at 25% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹31800 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹31700 grow to in 1 year at 25% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹10000 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 55300 people. The population grows by 20% every year. What will the population be after 1 year?
14. 14.What is the difference between the compound interest and the simple interest on ₹38000 at 25% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹32800 at 12% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹52000 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹35000 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹40000 grow to in 1 year at 8% per year compound interest (in ₹)?
21. 21.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
22. 22.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
23. 23.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹13600 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.A scooter is worth ₹36400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹17700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹14500 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹3300 at 10% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹14600 at 20% per year for 2 years (in ₹)?
31. 31.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹6500 grow to in 1 year at 15% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹13000 at 15% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹4800 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹19200 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
38. 38.What amount will ₹37800 grow to in 1 year at 4% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹17500 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹40000 grow to in 3 years at 25% per year compound interest (in ₹)?

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