Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 264 · 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 ₹20800 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹53600 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
4. 4.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹28000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹50900 at 10% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹49100 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹59600 at 15% per year for 2 years (in ₹)?
10. 10.A town has 42500 people. The population grows by 4% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹22800 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
13. 13.A town has 20000 people. The population grows by 10% every year. What will the population be after 1 year?
14. 14.A town has 34000 people. The population grows by 5% every year. What will the population be after 2 years?
15. 15.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
16. 16.A scooter is worth ₹30500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹50400 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹6700 grow to in 2 years at 20% per year compound interest (in ₹)?
19. 19.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹49600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹3600 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.A town has 14000 people. The population grows by 15% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
24. 24.What amount will ₹56000 grow to in 1 year at 12% per year compound interest (in ₹)?
25. 25.What amount will ₹54800 grow to in 2 years at 15% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹17000 at 10% per year for 3 years, compounded every year (in ₹).
29. 29.A town has 56600 people. The population grows by 20% every year. What will the population be after 1 year?
30. 30.What amount will ₹20300 grow to in 1 year at 12% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹28000 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹52600 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹18000 at 15% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹54300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
36. 36.A scooter is worth ₹50200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹51000 at 4% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹53500 grow to in 1 year at 25% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹14200 at 25% per year for 1 year, compounded every year (in ₹).

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