Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 455 · 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 ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
2. 2.A scooter is worth ₹3300. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹33200 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹49200 at 5% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹55600 at 20% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹28000 grow to in 1 year at 4% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹9600 at 5% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹22700 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹30800 grow to in 1 year at 5% per year compound interest (in ₹)?
11. 11.A town has 29500 people. The population grows by 20% every year. What will the population be after 3 years?
12. 12.A town has 21400 people. The population grows by 25% every year. What will the population be after 1 year?
13. 13.A town has 27500 people. The population grows by 12% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹13600 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹53100 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.A town has 26300 people. The population grows by 20% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹10000 at 25% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹56400 at 25% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹19400 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹22800 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹5100 grow to in 1 year at 8% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹24400 at 5% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹8400 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 52500 people. The population grows by 4% every year. What will the population be after 2 years?
27. 27.A town has 57600 people. The population grows by 10% 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 ₹39600 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
30. 30.What amount will ₹34800 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹56400 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 41600 people. The population grows by 4% every year. What will the population be after 1 year?
34. 34.What is the difference between the compound interest and the simple interest on ₹50300 at 20% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹40200 at 15% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹25100 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹6000 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
40. 40.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?

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