Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 737 · 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 ₹4000 at 15% per year for 2 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹4900 at 20% per year for 2 years (in ₹)?
3. 3.What amount will ₹20000 grow to in 1 year at 15% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹17800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
5. 5.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
7. 7.What amount will ₹23700 grow to in 1 year at 25% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹10100 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹33800 at 20% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
14. 14.What amount will ₹46700 grow to in 1 year at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹21300 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹54500 at 10% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹10800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹23500 at 20% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
20. 20.What amount will ₹49200 grow to in 2 years at 25% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹40000 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
23. 23.What amount will ₹31200 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹5300 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹14100 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹9300 at 20% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹13000 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹46500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
30. 30.A scooter is worth ₹58400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹25600 at 12% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹10000 at 25% per year for 2 years (in ₹)?
34. 34.What amount will ₹26000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹42900 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹2500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹27100 at 10% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹51200 at 25% per year for 2 years (in ₹)?
40. 40.A town has 32500 people. The population grows by 4% every year. What will the population be after 2 years?

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