Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 719 · 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 ₹44000 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹27500 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹32800 grow to in 2 years at 5% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹3500 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹38500 at 20% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹7400 at 20% per year for 1 year, compounded every year (in ₹).
7. 7.A town has 58000 people. The population grows by 20% every year. What will the population be after 3 years?
8. 8.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹37500 grow to in 2 years at 12% per year compound interest (in ₹)?
10. 10.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹31900 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹44000 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹10000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹28100 at 4% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹29300 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹37000 at 20% per year for 2 years (in ₹)?
19. 19.What amount will ₹13200 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹23500. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹50400 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹10000 grow to in 2 years at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹13400 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
27. 27.A town has 2500 people. The population grows by 8% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹17200 at 25% per year for 2 years (in ₹)?
30. 30.A town has 37000 people. The population grows by 20% every year. What will the population be after 3 years?
31. 31.What is the difference between the compound interest and the simple interest on ₹13200 at 25% per year for 2 years (in ₹)?
32. 32.A town has 39400 people. The population grows by 10% every year. What will the population be after 1 year?
33. 33.A town has 33300 people. The population grows by 20% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹41400 at 4% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹19000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹50500 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹47500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹51300 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹16800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?

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