Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 959 · 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 ₹38200 grow to in 1 year at 20% per year compound interest (in ₹)?
2. 2.A town has 4000 people. The population grows by 10% every year. What will the population be after 3 years?
3. 3.A town has 32000 people. The population grows by 15% every year. What will the population be after 2 years?
4. 4.Find the compound interest on ₹40500 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹53000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
6. 6.Find the compound interest on ₹56700 at 12% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹6900 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹8000 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹12800 at 25% per year for 2 years (in ₹)?
10. 10.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
12. 12.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹43600 at 25% per year for 2 years (in ₹)?
14. 14.What amount will ₹21000 grow to in 3 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹16000 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹38400 at 10% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹11200 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.A town has 42100 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹26000 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹12000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹24500 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹19300 at 10% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹9600 at 25% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹11500 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹50900 at 10% per year for 2 years (in ₹)?
30. 30.What amount will ₹14400 grow to in 3 years at 25% per year compound interest (in ₹)?
31. 31.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹41200 grow to in 2 years at 10% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹43000 at 25% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹45300 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹4900 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹15500 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹44800 at 8% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹40500 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹49000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?

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