Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 997 · 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 amount will ₹12800 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹7600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹5900 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹52400 at 10% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹54000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹14000 at 5% per year for 2 years (in ₹)?
7. 7.A town has 40600 people. The population grows by 20% every year. What will the population be after 2 years?
8. 8.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
10. 10.What amount will ₹5600 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹60000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹2500 grow to in 2 years at 12% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹31600 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹18000 at 5% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹55500 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
18. 18.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
19. 19.What amount will ₹59000 grow to in 1 year at 8% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹37600 at 20% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
22. 22.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹2300 at 20% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹14200 at 20% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹41000 grow to in 3 years at 20% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹55200 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹41600 at 8% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹17200 at 15% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹42600 at 10% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹25900 at 10% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹19700 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹22500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.A town has 51700 people. The population grows by 20% every year. What will the population be after 2 years?
35. 35.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
36. 36.What amount will ₹45100 grow to in 2 years at 20% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.A scooter is worth ₹48100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹59300 at 12% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹49600 grow to in 1 year at 8% per year compound interest (in ₹)?

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