Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 400 · 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 ₹49600 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹17500 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹40000 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹15700 grow to in 1 year at 15% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹58300 at 10% per year for 2 years (in ₹)?
6. 6.What amount will ₹6000 grow to in 2 years at 5% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹58200 at 25% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹52600 grow to in 1 year at 10% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹3200 at 15% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
11. 11.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹2500 grow to in 3 years at 20% per year compound interest (in ₹)?
14. 14.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
15. 15.Find the compound interest on ₹37500 at 8% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹39000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹8200 at 12% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹38000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹3300 at 20% per year for 2 years (in ₹)?
20. 20.A town has 24000 people. The population grows by 25% every year. What will the population be after 1 year?
21. 21.A town has 11000 people. The population grows by 10% every year. What will the population be after 3 years?
22. 22.What amount will ₹24000 grow to in 1 year at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹11200 at 12% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹13700 at 15% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹7500 grow to in 3 years at 20% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹12200 at 10% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹56800 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹57200 at 15% per year for 2 years (in ₹)?
31. 31.A town has 14000 people. The population grows by 25% every year. What will the population be after 2 years?
32. 32.A scooter is worth ₹33200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹27200 grow to in 3 years at 25% per year compound interest (in ₹)?
34. 34.What amount will ₹24600 grow to in 1 year at 4% per year compound interest (in ₹)?
35. 35.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
36. 36.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
37. 37.A town has 35800 people. The population grows by 5% every year. What will the population be after 1 year?
38. 38.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹35200 at 25% per year for 2 years, compounded every year (in ₹).

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