Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 216 · 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.A scooter is worth ₹39900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
2. 2.A scooter is worth ₹60000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹53400 at 20% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹52000 at 10% per year for 3 years, compounded every year (in ₹).
5. 5.A town has 33600 people. The population grows by 25% every year. What will the population be after 3 years?
6. 6.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹39100 at 15% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹50000 at 10% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹9800 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹31800 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹33300 at 20% per year for 2 years (in ₹)?
16. 16.What amount will ₹55000 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹53000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
18. 18.A town has 5400 people. The population grows by 10% every year. What will the population be after 2 years?
19. 19.What amount will ₹30800 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹29000 grow to in 1 year at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹18400 at 5% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹8000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹35300 at 25% per year for 1 year, compounded every year (in ₹).
25. 25.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
26. 26.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
27. 27.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹7600 at 5% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹12200 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹12500 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
32. 32.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹6800 at 15% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹12700 at 10% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹35100 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹48400 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹59200 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.A scooter is worth ₹19100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?

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