Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 301 · 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.A town has 15000 people. The population grows by 8% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹52100 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹35000 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹52200 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹3200 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹20100 at 10% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹3400 at 25% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹6700 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹27900 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.A town has 14600 people. The population grows by 4% every year. What will the population be after 1 year?
12. 12.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹4800 grow to in 2 years at 5% per year compound interest (in ₹)?
15. 15.What amount will ₹16900 grow to in 2 years at 10% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
18. 18.What amount will ₹15600 grow to in 1 year at 25% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹26000 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹36400 grow to in 2 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹26700 at 20% per year for 1 year, compounded every year (in ₹).
24. 24.A scooter is worth ₹23500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹10700 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹53900 at 20% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹52300. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
29. 29.A scooter is worth ₹52800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
30. 30.Find the compound interest on ₹8500 at 20% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹28400 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹27500 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹18400 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
36. 36.A town has 60000 people. The population grows by 15% every year. What will the population be after 2 years?
37. 37.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
39. 39.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
40. 40.Find the compound interest on ₹47500 at 4% per year for 2 years, compounded every year (in ₹).

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