Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 233 · 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 ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹22000 grow to in 3 years at 10% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹21000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
4. 4.What amount will ₹26100 grow to in 1 year at 25% per year compound interest (in ₹)?
5. 5.A town has 20400 people. The population grows by 25% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹10000 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹50800 at 15% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹19200 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹2000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
11. 11.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
13. 13.A town has 14400 people. The population grows by 12% every year. What will the population be after 1 year?
14. 14.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹4400 at 15% per year for 2 years (in ₹)?
17. 17.What amount will ₹22700 grow to in 2 years at 20% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹9200 at 15% per year for 2 years (in ₹)?
19. 19.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.What amount will ₹44900 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
22. 22.What amount will ₹59400 grow to in 1 year at 25% per year compound interest (in ₹)?
23. 23.What amount will ₹54300 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹37500 at 8% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹55000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
27. 27.Find the compound interest on ₹32000 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹20500 at 25% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 8600 people. The population grows by 20% every year. What will the population be after 1 year?
30. 30.What is the difference between the compound interest and the simple interest on ₹20900 at 20% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
32. 32.A town has 42400 people. The population grows by 15% every year. What will the population be after 2 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹14000 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹8300 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.A scooter is worth ₹19100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹4700 at 4% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹50800 at 5% per year for 2 years (in ₹)?

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