Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 891 · 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 ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹56900 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.A town has 12400 people. The population grows by 25% every year. What will the population be after 2 years?
4. 4.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
5. 5.A scooter is worth ₹49400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹22300 at 10% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹47600 at 4% per year for 1 year, compounded every year (in ₹).
9. 9.A town has 42800 people. The population grows by 5% every year. What will the population be after 2 years?
10. 10.What amount will ₹14800 grow to in 1 year at 5% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹29400 at 10% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹51200 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 40100 people. The population grows by 4% every year. What will the population be after 1 year?
15. 15.Find the compound interest on ₹4000 at 20% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹15400 at 8% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹8100 at 20% per year for 2 years (in ₹)?
18. 18.What amount will ₹17000 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.A town has 25200 people. The population grows by 15% every year. What will the population be after 1 year?
20. 20.A scooter is worth ₹55200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
21. 21.A scooter is worth ₹32500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
22. 22.What amount will ₹52800 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹3600 at 5% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
25. 25.A town has 8300 people. The population grows by 4% every year. What will the population be after 1 year?
26. 26.What is the difference between the compound interest and the simple interest on ₹24400 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹30700 at 4% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹32400 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹5000 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹32000 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
35. 35.What amount will ₹49600 grow to in 2 years at 15% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹46000 at 25% per year for 2 years (in ₹)?
37. 37.What amount will ₹31200 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹4000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.A town has 32500 people. The population grows by 4% every year. What will the population be after 2 years?
40. 40.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?

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