Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 2 · 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 ₹5000 at 4% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹48800 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹59900. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹18000 at 25% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
8. 8.What amount will ₹41200 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹34200 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹47400 grow to in 1 year at 4% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹46900 at 8% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
16. 16.What amount will ₹8700 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹32000 at 20% per year for 2 years (in ₹)?
18. 18.A town has 46200 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.A town has 6400 people. The population grows by 25% every year. What will the population be after 3 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹34700 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹9100 at 4% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 19000 people. The population grows by 20% every year. What will the population be after 1 year?
27. 27.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹11000 grow to in 2 years at 20% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹2400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹34000 at 25% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 10000 people. The population grows by 10% every year. What will the population be after 3 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
36. 36.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
37. 37.What amount will ₹15600 grow to in 2 years at 25% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹50000 at 20% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹8700 grow to in 1 year at 20% per year compound interest (in ₹)?

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