Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 222 · 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 ₹22500 at 8% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹31100 at 20% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹6800. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹5200 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹6400 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹8200 grow to in 1 year at 5% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
10. 10.A town has 47100 people. The population grows by 4% every year. What will the population be after 1 year?
11. 11.A town has 41400 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
14. 14.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
15. 15.What amount will ₹46400 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹45200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹24700 at 10% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹55900 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
20. 20.A town has 26200 people. The population grows by 4% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹45600 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹46400 at 10% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹21200 at 25% per year for 2 years (in ₹)?
26. 26.What amount will ₹50400 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹12900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
28. 28.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹10300 grow to in 1 year at 8% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹54500 at 20% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹57500 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹5800 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹31600 grow to in 2 years at 20% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹5500 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹18400 at 25% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹36400 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹56800 at 25% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹42900 at 20% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?

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