Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 158 · 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 ₹25000 grow to in 1 year at 20% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹21000 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹10000 at 15% per year for 1 year, compounded every year (in ₹).
4. 4.A scooter is worth ₹50300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹16500 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹20600 grow to in 2 years at 10% per year compound interest (in ₹)?
7. 7.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
8. 8.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹41300 at 10% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹17200 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹18000 grow to in 1 year at 15% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
13. 13.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹3200 at 25% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹43600 at 4% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹57500 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹17400 grow to in 1 year at 15% per year compound interest (in ₹)?
20. 20.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹46400 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹13000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
24. 24.A town has 4200 people. The population grows by 12% every year. What will the population be after 1 year?
25. 25.Find the compound interest on ₹21700 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹24400 at 25% per year for 2 years (in ₹)?
27. 27.What amount will ₹33600 grow to in 3 years at 25% per year compound interest (in ₹)?
28. 28.What amount will ₹8000 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹18000 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹21600 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹55500 at 10% per year for 2 years (in ₹)?
33. 33.A town has 20500 people. The population grows by 10% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹27600 at 10% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹30600 grow to in 1 year at 20% per year compound interest (in ₹)?
36. 36.What amount will ₹30900 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹22500 grow to in 1 year at 4% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹27700 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹11600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
40. 40.A town has 60000 people. The population grows by 4% every year. What will the population be after 2 years?

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