Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 983 · 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 is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
2. 2.What amount will ₹24000 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
4. 4.What amount will ₹15300 grow to in 2 years at 10% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹16100 at 12% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹34900 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹14000 at 5% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹23900. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
11. 11.A town has 42000 people. The population grows by 10% every year. What will the population be after 3 years?
12. 12.What amount will ₹16100 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹46500 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹45300 at 20% per year for 2 years (in ₹)?
16. 16.What amount will ₹2800 grow to in 2 years at 25% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
18. 18.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
19. 19.What amount will ₹22400 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹57700 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹11500 grow to in 1 year at 4% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹44000 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹56900 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹8700 grow to in 1 year at 10% per year compound interest (in ₹)?
26. 26.What amount will ₹54500 grow to in 3 years at 20% per year compound interest (in ₹)?
27. 27.What amount will ₹26800 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹36000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹5100 grow to in 1 year at 15% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹19900 at 20% per year for 2 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹14500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
32. 32.A scooter is worth ₹18500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
33. 33.A scooter is worth ₹9300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
34. 34.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹49000 grow to in 3 years at 10% per year compound interest (in ₹)?
37. 37.A town has 27000 people. The population grows by 20% every year. What will the population be after 3 years?
38. 38.What amount will ₹16200 grow to in 1 year at 12% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹17200 at 5% per year for 2 years (in ₹)?
40. 40.What amount will ₹46300 grow to in 2 years at 10% per year compound interest (in ₹)?

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