Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 20 · 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 is the difference between the compound interest and the simple interest on ₹13900 at 10% per year for 2 years (in ₹)?
2. 2.What amount will ₹17800 grow to in 1 year at 12% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹32900 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹45500 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹19300 at 10% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹19700 grow to in 1 year at 12% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹11200 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹14000 at 20% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹22100 at 20% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹35700 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹55200 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹16500 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.A town has 30000 people. The population grows by 20% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹53100 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹41000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹11500 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹56800 at 15% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 17000 people. The population grows by 20% every year. What will the population be after 3 years?
24. 24.Find the compound interest on ₹40000 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹4000 grow to in 3 years at 20% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹16700 at 10% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹36600 at 25% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
30. 30.What amount will ₹25000 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.What amount will ₹8700 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹19700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
33. 33.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹12600 at 15% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
36. 36.A town has 2800 people. The population grows by 4% every year. What will the population be after 1 year?
37. 37.What amount will ₹28000 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹35900 grow to in 1 year at 5% per year compound interest (in ₹)?
39. 39.What amount will ₹27000 grow to in 3 years at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?

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