Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 916 · 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 ₹38600 at 15% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹1600 grow to in 3 years at 25% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹11200 at 15% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 23200 people. The population grows by 25% every year. What will the population be after 2 years?
5. 5.Find the compound interest on ₹57100 at 5% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹56200 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹27900 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹16100 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.What amount will ₹37600 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.A town has 55000 people. The population grows by 10% every year. What will the population be after 1 year?
11. 11.A town has 52500 people. The population grows by 8% every year. What will the population be after 2 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹21400 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹35700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
17. 17.A town has 45200 people. The population grows by 25% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹30000 at 10% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹45700 at 10% per year for 2 years (in ₹)?
20. 20.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹53200 at 10% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹11300 at 10% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹32000 at 15% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹38800 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹12600 grow to in 2 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹7600 at 10% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹32800 at 5% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹34200 at 10% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹45000 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹21600 grow to in 2 years at 25% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹24700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹8800 at 15% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹3800 at 10% per year for 2 years (in ₹)?
39. 39.What amount will ₹36200 grow to in 1 year at 4% per year compound interest (in ₹)?
40. 40.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?

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