Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 390 · 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 ₹22700 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹29700 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.What amount will ₹29900 grow to in 1 year at 15% per year compound interest (in ₹)?
4. 4.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹22100 at 10% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹20700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹48000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹26600 at 10% per year for 2 years (in ₹)?
13. 13.What amount will ₹46800 grow to in 2 years at 5% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
15. 15.What amount will ₹56300 grow to in 1 year at 8% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
18. 18.What amount will ₹26600 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹48100 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹13000 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹52500 grow to in 2 years at 4% per year compound interest (in ₹)?
24. 24.What amount will ₹20500 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 23300 people. The population grows by 5% every year. What will the population be after 1 year?
27. 27.Find the compound interest on ₹46700 at 20% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹44800 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹53500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
30. 30.What amount will ₹52400 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.What amount will ₹17800 grow to in 1 year at 12% per year compound interest (in ₹)?
32. 32.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹56400 at 20% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹22200 at 10% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹28800 at 12% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹10000 at 20% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹47600 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹5000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
40. 40.Find the compound interest on ₹26900 at 25% per year for 1 year, compounded every year (in ₹).

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