Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 882 · 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 7200 people. The population grows by 10% every year. What will the population be after 2 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹58800 at 15% per year for 2 years (in ₹)?
3. 3.What amount will ₹11000 grow to in 1 year at 20% per year compound interest (in ₹)?
4. 4.A town has 11500 people. The population grows by 5% every year. What will the population be after 1 year?
5. 5.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹55600 at 5% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
8. 8.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹58000 at 15% per year for 2 years (in ₹)?
11. 11.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
12. 12.A scooter is worth ₹4500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
13. 13.A town has 17800 people. The population grows by 8% every year. What will the population be after 1 year?
14. 14.What is the difference between the compound interest and the simple interest on ₹17000 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹53600 at 25% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹21200 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹38000 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
19. 19.Find the compound interest on ₹56800 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹46500 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹51700 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹33500 grow to in 1 year at 20% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹43700 at 20% per year for 2 years (in ₹)?
24. 24.What amount will ₹58000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹53700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹42300 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹54800 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹32800 at 15% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹39400 at 20% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹12800 grow to in 2 years at 15% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹57600 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹42600 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹32800 at 25% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹6400 at 20% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹50000 at 5% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹23400 at 20% per year for 2 years (in ₹)?

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