Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 839 · 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 ₹18500 grow to in 3 years at 20% per year compound interest (in ₹)?
2. 2.A town has 5000 people. The population grows by 10% every year. What will the population be after 3 years?
3. 3.What amount will ₹10500 grow to in 1 year at 12% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹47700 at 15% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹12200 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.What amount will ₹25000 grow to in 2 years at 12% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹10800 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
9. 9.A town has 45600 people. The population grows by 12% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹4200 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹33600 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹27600 at 15% per year for 2 years (in ₹)?
13. 13.A town has 3700 people. The population grows by 4% every year. What will the population be after 1 year?
14. 14.Find the compound interest on ₹26500 at 12% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹13700 grow to in 1 year at 20% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹20700 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹42700 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹5600 at 5% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹11800 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.A town has 25500 people. The population grows by 20% every year. What will the population be after 3 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
25. 25.What amount will ₹33000 grow to in 3 years at 20% per year compound interest (in ₹)?
26. 26.What amount will ₹10300 grow to in 1 year at 25% per year compound interest (in ₹)?
27. 27.A town has 44000 people. The population grows by 20% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹41500. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹24000 at 10% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹43600 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹51600 at 5% per year for 2 years (in ₹)?
35. 35.What amount will ₹2800 grow to in 2 years at 15% per year compound interest (in ₹)?
36. 36.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
37. 37.What amount will ₹49600 grow to in 3 years at 25% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹12800 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
40. 40.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?

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