Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 525 · 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 ₹5000 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹23600 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹20400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
4. 4.What amount will ₹22800 grow to in 2 years at 25% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹13900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.A town has 46000 people. The population grows by 5% every year. What will the population be after 2 years?
8. 8.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 34800 people. The population grows by 5% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹4700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
12. 12.A town has 3300 people. The population grows by 5% every year. What will the population be after 1 year?
13. 13.Find the compound interest on ₹11700 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹39200 grow to in 2 years at 15% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹26000 at 15% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹3400 at 25% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹7000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.A town has 19900 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹12400 at 15% per year for 2 years (in ₹)?
21. 21.A town has 55500 people. The population grows by 20% every year. What will the population be after 1 year?
22. 22.What amount will ₹27900 grow to in 1 year at 12% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹30800 at 5% per year for 2 years (in ₹)?
24. 24.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
25. 25.What amount will ₹59900 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.What amount will ₹47500 grow to in 2 years at 12% per year compound interest (in ₹)?
27. 27.What amount will ₹48600 grow to in 1 year at 4% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹30300 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
32. 32.A town has 47200 people. The population grows by 20% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹33400 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
35. 35.What amount will ₹24400 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹52500 at 20% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹16900 grow to in 1 year at 4% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹39800 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹41300 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹41500 at 20% per year for 3 years, compounded every year (in ₹).

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