Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 440 · 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 scooter is worth ₹15000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
2. 2.What amount will ₹24100 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹53600 at 15% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹33000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹32600 at 10% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹12800 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.What amount will ₹59700 grow to in 1 year at 15% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹56400 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹46900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹6600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.What amount will ₹32000 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹59900 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
22. 22.A town has 6800 people. The population grows by 15% every year. What will the population be after 2 years?
23. 23.What amount will ₹31500 grow to in 1 year at 10% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹47500 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
26. 26.What amount will ₹32700 grow to in 1 year at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹46800 grow to in 1 year at 20% per year compound interest (in ₹)?
28. 28.What amount will ₹47000 grow to in 1 year at 8% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
31. 31.What amount will ₹17000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.A town has 17600 people. The population grows by 25% every year. What will the population be after 1 year?
33. 33.What is the difference between the compound interest and the simple interest on ₹46800 at 5% per year for 2 years (in ₹)?
34. 34.A town has 42000 people. The population grows by 10% every year. What will the population be after 3 years?
35. 35.Find the compound interest on ₹16000 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 ₹56800 at 25% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹9600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹60000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
40. 40.Find the compound interest on ₹52000 at 10% per year for 3 years, compounded every year (in ₹).

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