Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 523 · 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 ₹16400 at 25% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹3900 at 20% per year for 2 years (in ₹)?
3. 3.What amount will ₹60000 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.What amount will ₹36000 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹8000 at 15% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹15200 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹42700 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 ₹59700 at 20% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
10. 10.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.A town has 28500 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.What is the difference between the compound interest and the simple interest on ₹5500 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹50400 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹47500 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹2500 at 12% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹17200 at 15% per year for 2 years (in ₹)?
18. 18.A town has 17000 people. The population grows by 20% every year. What will the population be after 3 years?
19. 19.A scooter is worth ₹22700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
20. 20.Find the compound interest on ₹51100 at 25% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹22000 at 10% per year for 2 years (in ₹)?
22. 22.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹4000 at 5% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹7300 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 11900 people. The population grows by 15% every year. What will the population be after 1 year?
27. 27.What amount will ₹57300 grow to in 1 year at 20% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹29200 at 5% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹10000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹25200 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹3600 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹24900 at 10% per year for 2 years (in ₹)?
34. 34.A town has 20000 people. The population grows by 15% every year. What will the population be after 2 years?
35. 35.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹46500 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.A town has 52300 people. The population grows by 10% every year. What will the population be after 1 year?
39. 39.What is the difference between the compound interest and the simple interest on ₹6100 at 20% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹20100 at 20% per year for 2 years (in ₹)?

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