Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 949 · 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 ₹51000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹33200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
6. 6.What amount will ₹38400 grow to in 3 years at 25% per year compound interest (in ₹)?
7. 7.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
8. 8.A scooter is worth ₹55000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
9. 9.What amount will ₹43700 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.What amount will ₹3500 grow to in 2 years at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹54800 at 15% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹16800 at 5% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹42400 at 5% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹52000 at 4% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹32000 grow to in 2 years at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹37200 at 5% per year for 2 years (in ₹)?
18. 18.What amount will ₹45000 grow to in 2 years at 8% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹10400 at 20% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹58800 at 25% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹20000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹4100 at 20% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹3200 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹39000 at 10% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹22000 grow to in 3 years at 20% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹44000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
31. 31.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹32800 at 5% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹12600 at 15% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹18800 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.What amount will ₹33300 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹30000 at 10% per year for 3 years, compounded every year (in ₹).
37. 37.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹8700 at 25% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.A town has 6400 people. The population grows by 15% every year. What will the population be after 2 years?

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