Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 705 · 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 ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹56000 at 25% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹8500 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹2000 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
6. 6.What amount will ₹23800 grow to in 1 year at 4% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹51500 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹19600 at 20% per year for 2 years (in ₹)?
11. 11.What amount will ₹51000 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹32300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
13. 13.A scooter is worth ₹54700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
14. 14.A scooter is worth ₹40900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
16. 16.What amount will ₹35100 grow to in 1 year at 4% per year compound interest (in ₹)?
17. 17.What amount will ₹19500 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.A town has 26200 people. The population grows by 15% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹42800 at 25% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹41800 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹40800 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
26. 26.What amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹16800 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.A town has 17500 people. The population grows by 4% every year. What will the population be after 2 years?
30. 30.Find the compound interest on ₹55900 at 15% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹52400 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹33500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹57200 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹2000 at 15% per year for 2 years (in ₹)?
39. 39.A town has 50600 people. The population grows by 10% every year. What will the population be after 1 year?
40. 40.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?

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