Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 825 · 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 is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
2. 2.What amount will ₹52500 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹14200 at 10% per year for 2 years (in ₹)?
4. 4.What amount will ₹52700 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹15300 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.A scooter is worth ₹31100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
8. 8.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹8500 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹25600 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹8100 at 10% per year for 2 years (in ₹)?
12. 12.What amount will ₹18200 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹11200 at 15% per year for 2 years (in ₹)?
14. 14.A town has 6200 people. The population grows by 10% every year. What will the population be after 1 year?
15. 15.A scooter is worth ₹58000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
16. 16.What amount will ₹9600 grow to in 3 years at 25% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹13200 at 15% per year for 2 years (in ₹)?
18. 18.What amount will ₹50500 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹30000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
22. 22.Find the compound interest on ₹27800 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹45400 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹41900 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹52400 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹7100 at 10% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹27300 grow to in 1 year at 8% per year compound interest (in ₹)?
30. 30.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?
31. 31.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹7600 at 10% per year for 1 year, compounded every year (in ₹).
35. 35.A town has 12300 people. The population grows by 12% every year. What will the population be after 1 year?
36. 36.What amount will ₹19100 grow to in 1 year at 15% per year compound interest (in ₹)?
37. 37.What amount will ₹22800 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹35300 at 20% per year for 2 years (in ₹)?
40. 40.A scooter is worth ₹15500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?

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