Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 1 · 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 is the difference between the compound interest and the simple interest on ₹3200 at 15% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹16200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
3. 3.What amount will ₹40100 grow to in 2 years at 10% per year compound interest (in ₹)?
4. 4.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
5. 5.Find the compound interest on ₹11600 at 8% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹30200 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹26200 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹53600 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹33600 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹45000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
13. 13.Find the compound interest on ₹20500 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 26400 people. The population grows by 15% every year. What will the population be after 1 year?
15. 15.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.What amount will ₹17100 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹32800 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹8000 grow to in 1 year at 15% per year compound interest (in ₹)?
21. 21.What amount will ₹16000 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.A town has 4000 people. The population grows by 10% every year. What will the population be after 3 years?
23. 23.What amount will ₹18300 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹3000 at 20% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹38400 at 25% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹27600 at 25% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹58000 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.What amount will ₹15200 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹2000 grow to in 1 year at 12% per year compound interest (in ₹)?
32. 32.What amount will ₹31000 grow to in 3 years at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹4600 grow to in 1 year at 15% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹57500 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹40200 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.What amount will ₹8000 grow to in 2 years at 15% per year compound interest (in ₹)?
37. 37.A town has 44400 people. The population grows by 15% every year. What will the population be after 2 years?
38. 38.Find the compound interest on ₹14900 at 12% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹22000 at 25% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).

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