Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 180 · 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.What amount will ₹32700 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹10500 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹8400 at 10% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹20400 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹57500 grow to in 2 years at 20% per year compound interest (in ₹)?
7. 7.What amount will ₹4500 grow to in 3 years at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.A town has 17300 people. The population grows by 5% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹58800 at 15% per year for 1 year, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹8900 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹30400 grow to in 2 years at 25% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹19000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹38400 at 25% per year for 2 years (in ₹)?
18. 18.A town has 43700 people. The population grows by 12% every year. What will the population be after 1 year?
19. 19.A town has 46000 people. The population grows by 20% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹43000 at 20% per year for 3 years, compounded every year (in ₹).
21. 21.What amount will ₹46600 grow to in 1 year at 25% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹59000 at 20% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹59300 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹22600 at 10% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹17800 at 20% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹27800 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹32400 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.A town has 7500 people. The population grows by 12% every year. What will the population be after 2 years?
33. 33.Find the compound interest on ₹30200 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.A scooter is worth ₹15000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
35. 35.A town has 46700 people. The population grows by 10% every year. What will the population be after 1 year?
36. 36.What amount will ₹2000 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.A town has 53800 people. The population grows by 4% every year. What will the population be after 1 year?
38. 38.What amount will ₹21500 grow to in 1 year at 15% per year compound interest (in ₹)?
39. 39.What amount will ₹27600 grow to in 2 years at 10% per year compound interest (in ₹)?
40. 40.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?

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