Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 328 · 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 ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹55300 at 20% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹7200 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹39400. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹50400 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹24800 at 10% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹55400 at 20% per year for 2 years (in ₹)?
11. 11.A town has 37300 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.A town has 24000 people. The population grows by 20% every year. What will the population be after 3 years?
13. 13.What amount will ₹54000 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹16500 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹30000 at 20% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹20000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹25000 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.A town has 16100 people. The population grows by 5% 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 ₹38900 at 20% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹26400 at 15% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹42000 at 25% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹19200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
24. 24.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹13000 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹24800 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹17700 grow to in 1 year at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹35400 at 10% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹23500 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
33. 33.A scooter is worth ₹51200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
34. 34.Find the compound interest on ₹6300 at 10% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹12800 at 15% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹35200 at 5% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹38000 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹44800 at 10% per year for 2 years (in ₹)?

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