Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 144 · 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 28200 people. The population grows by 8% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹28100 at 10% per year for 2 years (in ₹)?
3. 3.What amount will ₹10700 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹26000 at 25% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹32700 at 25% per year for 1 year, compounded every year (in ₹).
7. 7.A town has 32600 people. The population grows by 25% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹41100 at 4% per year for 1 year, compounded every year (in ₹).
9. 9.A scooter is worth ₹32000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹20900 grow to in 2 years at 20% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹28800 at 15% per year for 2 years (in ₹)?
15. 15.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.A town has 6800 people. The population grows by 4% every year. What will the population be after 1 year?
17. 17.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
19. 19.A town has 16200 people. The population grows by 10% every year. What will the population be after 1 year?
20. 20.What amount will ₹55800 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹58800 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.A scooter is worth ₹41400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
24. 24.A town has 8300 people. The population grows by 15% every year. What will the population be after 1 year?
25. 25.What is the difference between the compound interest and the simple interest on ₹36600 at 10% per year for 2 years (in ₹)?
26. 26.What amount will ₹23000 grow to in 3 years at 20% per year compound interest (in ₹)?
27. 27.A town has 3100 people. The population grows by 12% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹45600 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹58500 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹19600 grow to in 2 years at 25% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹49700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
34. 34.Find the compound interest on ₹29200 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹25100 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹36000 grow to in 3 years at 10% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹2000 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?

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