Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 106 · 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 ₹30000 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹36900 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹50800 at 25% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹4900 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹52500 grow to in 1 year at 10% per year compound interest (in ₹)?
7. 7.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹10300 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹2700 at 10% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹8000 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹36600 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹13700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
15. 15.Find the compound interest on ₹58700 at 8% per year for 1 year, compounded every year (in ₹).
16. 16.Find the compound interest on ₹7600 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹60000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
18. 18.What amount will ₹46800 grow to in 1 year at 10% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹41600 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹30800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
23. 23.Find the compound interest on ₹42700 at 4% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹43600 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹44300 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
28. 28.A town has 3500 people. The population grows by 5% every year. What will the population be after 1 year?
29. 29.Find the compound interest on ₹14000 at 10% per year for 3 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹42200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹40800 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹53000 at 15% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹57200 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹9400 at 20% per year for 2 years (in ₹)?
36. 36.What amount will ₹48800 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹24600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹37200 at 25% per year for 2 years (in ₹)?
39. 39.What amount will ₹14900 grow to in 2 years at 10% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹3800 at 20% per year for 2 years (in ₹)?

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