Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 711 · 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 ₹49000 at 20% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹20800 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
4. 4.A town has 4300 people. The population grows by 25% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹58600 at 15% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹7200 grow to in 2 years at 20% per year compound interest (in ₹)?
7. 7.What amount will ₹33500 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹25200 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹6000 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹10300 at 8% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹29300 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹51000 at 20% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹28100 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
15. 15.A town has 6900 people. The population grows by 12% every year. What will the population be after 1 year?
16. 16.Find the compound interest on ₹44000 at 10% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹57000 grow to in 1 year at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹58800 at 25% per year for 2 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
20. 20.A town has 27500 people. The population grows by 10% every year. What will the population be after 2 years?
21. 21.What amount will ₹3200 grow to in 2 years at 20% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹13100 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹58600 at 12% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹24700 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹43200 grow to in 2 years at 15% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹12400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹47200 at 5% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹18000 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹40400 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹36200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
35. 35.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹13200 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹49200 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.What amount will ₹11400 grow to in 1 year at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹9600 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?

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