Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 608 · 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 21900 people. The population grows by 15% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹30400 at 15% per year for 2 years (in ₹)?
3. 3.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹42000 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹36900 at 10% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹11300 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹51200 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹14100 at 20% per year for 2 years (in ₹)?
13. 13.A scooter is worth ₹41200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
14. 14.What amount will ₹57600 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
17. 17.What amount will ₹49000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹30800 at 25% per year for 2 years (in ₹)?
20. 20.What amount will ₹28900 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
22. 22.What amount will ₹29500 grow to in 1 year at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹49400 at 12% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹28600 at 20% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹26300 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹49200 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
28. 28.A town has 6500 people. The population grows by 20% every year. What will the population be after 3 years?
29. 29.What amount will ₹7100 grow to in 2 years at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹59500 at 12% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹12800 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹9600 at 25% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹9900 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹57900 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹3200 at 5% per year for 2 years (in ₹)?
37. 37.What amount will ₹58400 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹44200 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹11500 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).

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