Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 266 · 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 ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 9700 people. The population grows by 8% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹14600 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹28400 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹2000 at 15% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹7500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
8. 8.Find the compound interest on ₹14500 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹53900 grow to in 1 year at 4% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹44100 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹47500 at 4% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹27400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹54500 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹12400 grow to in 2 years at 15% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹28100 at 20% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
20. 20.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
21. 21.What amount will ₹55900 grow to in 2 years at 10% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹33300 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹8700 at 10% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹35200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
27. 27.Find the compound interest on ₹13500 at 20% per year for 3 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹43300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹15600 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹20800 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹22400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
32. 32.Find the compound interest on ₹41000 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹28000 at 15% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹12900 at 10% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.What amount will ₹57000 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.What amount will ₹2900 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹25400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹31500 at 12% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹21600 at 25% per year for 2 years (in ₹)?

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