Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 679 · 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 ₹52400 at 5% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
3. 3.A scooter is worth ₹43000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹18300 at 4% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 18500 people. The population grows by 5% every year. What will the population be after 1 year?
8. 8.What amount will ₹13100 grow to in 1 year at 5% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹9600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
10. 10.A scooter is worth ₹59200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
11. 11.A scooter is worth ₹21400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹52400 at 15% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹14400 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 26900 people. The population grows by 12% every year. What will the population be after 1 year?
15. 15.A town has 14100 people. The population grows by 15% every year. What will the population be after 1 year?
16. 16.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹27200 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹53200 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹47600 at 25% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?
22. 22.What amount will ₹32400 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹33200 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹26300 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.What amount will ₹30000 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹55800 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹4200 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹21500 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.What amount will ₹58400 grow to in 2 years at 20% per year compound interest (in ₹)?
31. 31.A town has 6400 people. The population grows by 4% every year. What will the population be after 1 year?
32. 32.What amount will ₹23100 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.What amount will ₹54400 grow to in 3 years at 25% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹12500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹14100 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 ₹15000 at 12% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹8400 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹18400 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹25100 at 10% per year for 1 year, compounded every year (in ₹).

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