Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 485 · 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 ₹14300 grow to in 1 year at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹3800 at 10% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹14000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹34500 at 10% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹9900 at 12% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹2500 at 10% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹2400 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹38800 at 20% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 49000 people. The population grows by 20% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹44100 grow to in 1 year at 25% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹27600 at 15% per year for 2 years (in ₹)?
15. 15.What amount will ₹36400 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹27400 at 20% per year for 2 years (in ₹)?
17. 17.What amount will ₹9200 grow to in 2 years at 15% per year compound interest (in ₹)?
18. 18.What amount will ₹57000 grow to in 1 year at 8% per year compound interest (in ₹)?
19. 19.What amount will ₹38400 grow to in 3 years at 25% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹59200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹21600 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹49500 at 10% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹35200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
24. 24.Find the compound interest on ₹4100 at 20% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹16200 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.A town has 16500 people. The population grows by 25% every year. What will the population be after 1 year?
27. 27.A town has 31900 people. The population grows by 4% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹54800 at 5% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹27600 at 5% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
33. 33.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
34. 34.A scooter is worth ₹2500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹16800 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹42000 at 25% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹32200 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹55400 grow to in 2 years at 20% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹54000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
40. 40.What amount will ₹15300 grow to in 2 years at 10% per year compound interest (in ₹)?

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