Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 615 · 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.A scooter is worth ₹30100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹20700 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
5. 5.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
6. 6.A scooter is worth ₹25200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹53800 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹17900 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 23300 people. The population grows by 8% every year. What will the population be after 1 year?
10. 10.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹20000 grow to in 2 years at 4% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹2700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?
16. 16.A town has 2000 people. The population grows by 5% every year. What will the population be after 1 year?
17. 17.What amount will ₹16000 grow to in 1 year at 8% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹59500 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
20. 20.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹27000 at 25% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
26. 26.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹43600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
28. 28.Find the compound interest on ₹58900 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹49400 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹27900 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹12000 at 25% per year for 2 years (in ₹)?
34. 34.A town has 46200 people. The population grows by 10% every year. What will the population be after 2 years?
35. 35.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹40100 grow to in 1 year at 8% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹49200 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹49000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹51000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).

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