Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 872 · 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.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
2. 2.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹9800 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹54400 at 5% per year for 2 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹9600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹43500 at 20% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹57800 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹2100 grow to in 1 year at 10% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹15000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
12. 12.A scooter is worth ₹29400. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
13. 13.A town has 42200 people. The population grows by 20% every year. What will the population be after 1 year?
14. 14.Find the compound interest on ₹6200 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹58300 grow to in 1 year at 25% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹47600 at 25% per year for 2 years (in ₹)?
17. 17.A town has 53100 people. The population grows by 12% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹6000 at 15% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹16400 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹21000 at 20% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 25500 people. The population grows by 20% every year. What will the population be after 3 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹53200 at 5% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹5200 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹60000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
28. 28.Find the compound interest on ₹11100 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹30000 at 15% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
33. 33.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
34. 34.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
35. 35.What amount will ₹36200 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.A town has 15500 people. The population grows by 20% every year. What will the population be after 3 years?
37. 37.Find the compound interest on ₹60000 at 8% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?

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