Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 930 · 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 town has 57700 people. The population grows by 5% every year. What will the population be after 1 year?
2. 2.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
3. 3.What amount will ₹36600 grow to in 1 year at 5% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹11400 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹37600 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹40900 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹43200 at 12% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹33700 at 20% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹42600 at 10% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
15. 15.A scooter is worth ₹18400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
16. 16.Find the compound interest on ₹41000 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹40400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
18. 18.A scooter is worth ₹53600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹51700 grow to in 1 year at 5% per year compound interest (in ₹)?
20. 20.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.A town has 46400 people. The population grows by 25% every year. What will the population be after 3 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹33300 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹36800 at 5% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹3200 at 15% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 18800 people. The population grows by 12% every year. What will the population be after 1 year?
27. 27.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
28. 28.A scooter is worth ₹27400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹8000 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹15400 at 12% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹45300 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.A scooter is worth ₹29200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹5100 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹20000 at 4% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹5100 at 10% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?

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