Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 150 · 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 ₹8800 at 5% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹5900 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.A town has 10700 people. The population grows by 12% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
7. 7.What amount will ₹12200 grow to in 2 years at 10% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹54000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
9. 9.Find the compound interest on ₹34600 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹34400 grow to in 2 years at 5% per year compound interest (in ₹)?
11. 11.What amount will ₹26800 grow to in 2 years at 5% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹25700 at 10% per year for 2 years (in ₹)?
13. 13.What amount will ₹23000 grow to in 2 years at 10% per year compound interest (in ₹)?
14. 14.What amount will ₹23400 grow to in 1 year at 5% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹31200 at 15% per year for 2 years (in ₹)?
16. 16.A town has 51800 people. The population grows by 10% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹13000 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹47200 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.What amount will ₹35000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹7600 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹13500 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹4700 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹19000 at 10% per year for 3 years, compounded every year (in ₹).
25. 25.A town has 2100 people. The population grows by 12% every year. What will the population be after 1 year?
26. 26.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
30. 30.What amount will ₹3300 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹22000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹35500 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹20000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹50100 at 20% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹13100 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹36000 at 20% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹22400 at 25% per year for 2 years (in ₹)?
40. 40.What amount will ₹32700 grow to in 1 year at 5% per year compound interest (in ₹)?

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