Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 706 · 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 ₹48000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹58400 at 4% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹11600 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.A town has 3000 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹51600 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹4800 grow to in 1 year at 12% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹26000 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹53200 at 25% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹11200 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹52700 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹29500 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹13400 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹9600 at 10% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹3500 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹38300 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 12700 people. The population grows by 15% every year. What will the population be after 1 year?
21. 21.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹24500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹28800 at 15% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹24400 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹11600 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.A town has 59600 people. The population grows by 5% every year. What will the population be after 2 years?
28. 28.What amount will ₹40000 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.A town has 31000 people. The population grows by 10% every year. What will the population be after 3 years?
30. 30.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.What amount will ₹8800 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹42200 at 25% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹20000 grow to in 2 years at 4% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹54800 at 25% per year for 2 years (in ₹)?
36. 36.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹7100 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.A town has 5000 people. The population grows by 12% every year. What will the population be after 2 years?
39. 39.Find the compound interest on ₹31700 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹43200 grow to in 3 years at 25% per year compound interest (in ₹)?

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