Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 857 · 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 ₹3100 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
3. 3.What amount will ₹12300 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹49600 at 5% per year for 2 years (in ₹)?
5. 5.What amount will ₹45500 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹6900. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
8. 8.What amount will ₹49100 grow to in 1 year at 25% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹41900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹14700 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹40800 at 5% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹35100 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹56000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹8500 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹52000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹32800 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.A town has 49600 people. The population grows by 15% every year. What will the population be after 2 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹4400 at 20% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹27500 at 4% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹27200 at 5% per year for 2 years (in ₹)?
26. 26.A town has 24300 people. The population grows by 10% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
28. 28.What amount will ₹10000 grow to in 3 years at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹27600 at 25% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹2900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
31. 31.A scooter is worth ₹31000. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
32. 32.What amount will ₹57900 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹13000 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹45700 at 10% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹34800 at 15% per year for 2 years (in ₹)?
36. 36.A town has 39600 people. The population grows by 5% every year. What will the population be after 2 years?
37. 37.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹29000 grow to in 3 years at 10% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?

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