Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 905 · 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 ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹20500 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹8300 grow to in 2 years at 10% per year compound interest (in ₹)?
4. 4.What amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹34200 at 20% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹27300 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.A scooter is worth ₹29400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
9. 9.A town has 42500 people. The population grows by 12% every year. What will the population be after 1 year?
10. 10.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹24400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹24400 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹20800 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
15. 15.What amount will ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹18700 at 10% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹58400 at 15% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹41400 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.A town has 18700 people. The population grows by 25% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹22100 at 25% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹51200 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹40300 at 25% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹48000 at 25% per year for 3 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹38000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
27. 27.Find the compound interest on ₹7300 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 26400 people. The population grows by 20% every year. What will the population be after 1 year?
31. 31.A scooter is worth ₹18100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
32. 32.What amount will ₹4800 grow to in 2 years at 15% per year compound interest (in ₹)?
33. 33.A town has 7900 people. The population grows by 8% every year. What will the population be after 1 year?
34. 34.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹27100 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹3600 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.What amount will ₹26000 grow to in 3 years at 10% per year compound interest (in ₹)?
40. 40.What amount will ₹23500 grow to in 3 years at 20% per year compound interest (in ₹)?

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