Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 920 · 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 ₹59500 at 25% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹24800 at 25% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
5. 5.A scooter is worth ₹41100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
6. 6.A town has 17500 people. The population grows by 4% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹11300 at 5% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹5500 grow to in 1 year at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹20500 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹36600 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.What amount will ₹5800 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹44400 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.What amount will ₹43700 grow to in 1 year at 8% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹40200. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
18. 18.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹49600 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹57000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹37600 at 5% per year for 2 years (in ₹)?
23. 23.What amount will ₹51000 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.A town has 1600 people. The population grows by 25% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹55200 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹27200 grow to in 3 years at 25% per year compound interest (in ₹)?
27. 27.What amount will ₹54400 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹58300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹52500 grow to in 1 year at 15% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹18800 at 10% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹4000 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹14100 at 10% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹50800 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹6600 at 10% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹20200 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹18000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
39. 39.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹24600 at 12% per year for 1 year, compounded every year (in ₹).

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