Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 964 · 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 amount will ₹4400 grow to in 1 year at 12% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹43200 at 15% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹34800 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 49600 people. The population grows by 25% every year. What will the population be after 3 years?
5. 5.A scooter is worth ₹45000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.Find the compound interest on ₹28500 at 25% per year for 1 year, compounded every year (in ₹).
7. 7.A scooter is worth ₹10800. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
8. 8.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹46700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
10. 10.Find the compound interest on ₹12800 at 5% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 32500 people. The population grows by 4% every year. What will the population be after 2 years?
12. 12.A scooter is worth ₹12500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
13. 13.Find the compound interest on ₹22500 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹2000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹8700 at 5% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 50600 people. The population grows by 20% every year. What will the population be after 2 years?
17. 17.A scooter is worth ₹47300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
18. 18.What amount will ₹46400 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
21. 21.What amount will ₹18800 grow to in 1 year at 10% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹30000 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹43200 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹23800 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹45200 at 15% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹49000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹25200 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹45200 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹19600 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
32. 32.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹14000 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹31600 at 15% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹12500 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹10500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹32400 at 25% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.Find the compound interest on ₹24700 at 10% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹18600 at 20% per year for 1 year, compounded every year (in ₹).

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