Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 101 · 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 ₹43000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹38400 at 10% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹40500 at 20% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹2500 at 8% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹49800 at 15% per year for 1 year, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹45900 at 20% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹50000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
8. 8.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹36700 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹3400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
11. 11.Find the compound interest on ₹40600 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹19000 grow to in 1 year at 10% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹47400 at 20% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹29700 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹53600 at 15% per year for 2 years (in ₹)?
16. 16.A town has 27500 people. The population grows by 15% every year. What will the population be after 1 year?
17. 17.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹56400 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
20. 20.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A town has 15000 people. The population grows by 4% every year. What will the population be after 2 years?
22. 22.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹9700 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.What amount will ₹47200 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹50400 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹10400 at 25% per year for 2 years, compounded every year (in ₹).
27. 27.A town has 54000 people. The population grows by 20% every year. What will the population be after 3 years?
28. 28.A scooter is worth ₹40000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹49900 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹59200 at 25% per year for 2 years (in ₹)?
31. 31.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹49000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
35. 35.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
36. 36.What amount will ₹8800 grow to in 2 years at 15% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹9200 at 10% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹19000 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
40. 40.What amount will ₹8700 grow to in 1 year at 5% per year compound interest (in ₹)?

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