Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 861 · 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 ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹13400 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
4. 4.A town has 10000 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
6. 6.A town has 30300 people. The population grows by 15% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹47400 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹49100 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹3700 at 20% per year for 2 years, compounded every year (in ₹).
11. 11.A town has 55000 people. The population grows by 12% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹23500 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹5000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹13000 at 20% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹13800 at 5% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
18. 18.What amount will ₹30800 grow to in 2 years at 5% per year compound interest (in ₹)?
19. 19.A town has 54000 people. The population grows by 10% every year. What will the population be after 3 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹43600 grow to in 1 year at 4% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹55400 at 12% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹39000 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹60000 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹47100 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹57200 at 25% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹46900 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹25800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹44800 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹41200 grow to in 2 years at 5% per year compound interest (in ₹)?
34. 34.What amount will ₹40300 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.What amount will ₹16400 grow to in 2 years at 25% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹3200 at 5% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹41700 at 10% per year for 2 years (in ₹)?
38. 38.What amount will ₹8000 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹8800 at 12% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹30800 at 5% per year for 2 years (in ₹)?

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