Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 921 · 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 28300 people. The population grows by 4% every year. What will the population be after 1 year?
2. 2.Find the compound interest on ₹56800 at 15% per year for 2 years, compounded every year (in ₹).
3. 3.A scooter is worth ₹40000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
4. 4.A scooter is worth ₹45200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
5. 5.Find the compound interest on ₹39000 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹28200. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹33100 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.A town has 4000 people. The population grows by 10% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹5200 at 5% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹53400 at 20% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹26800 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹12000 grow to in 2 years at 5% per year compound interest (in ₹)?
17. 17.What amount will ₹9500 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.What amount will ₹13500 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹58800 at 15% per year for 2 years (in ₹)?
20. 20.What amount will ₹34700 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹13200 at 5% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹49200 at 10% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹5600 at 5% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹3200 at 25% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹57500 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.What amount will ₹38400 grow to in 3 years at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹21600 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹13900 at 12% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹17000 grow to in 3 years at 20% per year compound interest (in ₹)?
36. 36.What amount will ₹56000 grow to in 3 years at 25% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹17600 at 25% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹23000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?

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