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Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 354 · 40 sums
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.What amount will ₹46800 grow to in 2 years at 5% per year compound interest (in ₹)?
  2. 2.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
  3. 3.Find the compound interest on ₹42400 at 5% per year for 2 years, compounded every year (in ₹).
  4. 4.A town has 11000 people. The population grows by 12% every year. What will the population be after 1 year?
  5. 5.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
  6. 6.What amount will ₹44500 grow to in 3 years at 20% per year compound interest (in ₹)?
  7. 7.Find the compound interest on ₹3100 at 20% per year for 2 years, compounded every year (in ₹).
  8. 8.What is the difference between the compound interest and the simple interest on ₹34400 at 10% per year for 2 years (in ₹)?
  9. 9.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
  10. 10.What amount will ₹54900 grow to in 1 year at 15% per year compound interest (in ₹)?
  11. 11.What amount will ₹50000 grow to in 3 years at 20% per year compound interest (in ₹)?
  12. 12.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
  13. 13.What amount will ₹23800 grow to in 1 year at 15% per year compound interest (in ₹)?
  14. 14.What is the difference between the compound interest and the simple interest on ₹12500 at 20% per year for 2 years (in ₹)?
  15. 15.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
  16. 16.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
  17. 17.What is the difference between the compound interest and the simple interest on ₹41200 at 25% per year for 2 years (in ₹)?
  18. 18.What amount will ₹12700 grow to in 1 year at 20% per year compound interest (in ₹)?
  19. 19.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
  20. 20.What amount will ₹10800 grow to in 2 years at 5% per year compound interest (in ₹)?
  21. 21.Find the compound interest on ₹33200 at 15% per year for 2 years, compounded every year (in ₹).
  22. 22.What amount will ₹25100 grow to in 1 year at 8% per year compound interest (in ₹)?
  23. 23.What is the difference between the compound interest and the simple interest on ₹46100 at 10% per year for 2 years (in ₹)?
  24. 24.Find the compound interest on ₹22800 at 12% per year for 1 year, compounded every year (in ₹).
  25. 25.What amount will ₹12200 grow to in 1 year at 15% per year compound interest (in ₹)?
  26. 26.What amount will ₹39400 grow to in 1 year at 25% per year compound interest (in ₹)?
  27. 27.Find the compound interest on ₹16100 at 5% per year for 1 year, compounded every year (in ₹).
  28. 28.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
  29. 29.A town has 25800 people. The population grows by 8% every year. What will the population be after 1 year?
  30. 30.What is the difference between the compound interest and the simple interest on ₹13500 at 20% per year for 2 years (in ₹)?
  31. 31.What amount will ₹27000 grow to in 1 year at 5% per year compound interest (in ₹)?
  32. 32.What amount will ₹24100 grow to in 1 year at 4% per year compound interest (in ₹)?
  33. 33.What amount will ₹15100 grow to in 1 year at 20% per year compound interest (in ₹)?
  34. 34.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
  35. 35.Find the compound interest on ₹57100 at 12% per year for 1 year, compounded every year (in ₹).
  36. 36.What is the difference between the compound interest and the simple interest on ₹20000 at 15% per year for 2 years (in ₹)?
  37. 37.What is the difference between the compound interest and the simple interest on ₹38200 at 10% per year for 2 years (in ₹)?
  38. 38.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
  39. 39.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
  40. 40.Find the compound interest on ₹15400 at 5% per year for 1 year, compounded every year (in ₹).

Answer key

  1. 51597
  2. 96
  3. 4346
  4. 12320
  5. 128
  6. 76896
  7. 1364
  8. 344
  9. 13310
  10. 63135
  11. 86400
  12. 4167
  13. 27370
  14. 500
  15. 15625
  16. 2080
  17. 2575
  18. 15240
  19. 76
  20. 11907
  21. 10707
  22. 27108
  23. 461
  24. 2736
  25. 14030
  26. 49250
  27. 805
  28. 16668
  29. 27864
  30. 540
  31. 28350
  32. 25064
  33. 18120
  34. 12167
  35. 6852
  36. 450
  37. 382
  38. 2544
  39. 3050
  40. 770

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