Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 39 · 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 ₹37300 grow to in 1 year at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹51800 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹11800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹56800 at 5% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹10700 at 8% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹37200 at 25% per year for 2 years (in ₹)?
8. 8.A town has 50000 people. The population grows by 5% every year. What will the population be after 1 year?
9. 9.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
10. 10.What amount will ₹57600 grow to in 1 year at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹46800 at 5% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹52800 at 25% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹41600 at 5% per year for 2 years (in ₹)?
18. 18.What amount will ₹15500 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.What amount will ₹25800 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 53500 people. The population grows by 10% every year. What will the population be after 2 years?
22. 22.What amount will ₹57200 grow to in 1 year at 12% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹36300 at 20% per year for 2 years (in ₹)?
24. 24.What amount will ₹21000 grow to in 3 years at 20% per year compound interest (in ₹)?
25. 25.What amount will ₹11200 grow to in 1 year at 25% per year compound interest (in ₹)?
26. 26.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹5100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
28. 28.A scooter is worth ₹51300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹15200 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹40000 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹53600 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹33800 at 20% per year for 2 years (in ₹)?
33. 33.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹23700 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹33300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹12800 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹14000 at 25% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹58600 at 20% per year for 2 years (in ₹)?

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