Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 388 · 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 ₹19900 at 15% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹42000 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹20800 at 15% per year for 2 years (in ₹)?
6. 6.What amount will ₹23200 grow to in 2 years at 5% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹18800 at 12% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹39200 at 25% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹56400 at 25% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
12. 12.What amount will ₹23100 grow to in 1 year at 4% per year compound interest (in ₹)?
13. 13.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹31000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
16. 16.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹8600 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 ₹7200 at 25% per year for 2 years (in ₹)?
19. 19.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹31600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
21. 21.A town has 35700 people. The population grows by 8% every year. What will the population be after 1 year?
22. 22.A town has 11500 people. The population grows by 10% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹16000 at 15% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹51600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹20000 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹13900 at 20% per year for 2 years (in ₹)?
27. 27.A town has 55300 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹57500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
29. 29.Find the compound interest on ₹26000 at 5% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 26700 people. The population grows by 10% every year. What will the population be after 2 years?
31. 31.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹59200 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.A town has 22400 people. The population grows by 25% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹4800 at 5% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹2000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹8200 at 4% per year for 1 year, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹56400 at 5% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹46800 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?

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