Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 58 · 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 ₹39600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹52000 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹49600 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹43500 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹33000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹58600 at 8% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹55600 at 15% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹58900 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹11600 grow to in 1 year at 12% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹59800 at 12% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
15. 15.What amount will ₹5400 grow to in 1 year at 5% per year compound interest (in ₹)?
16. 16.What amount will ₹28700 grow to in 1 year at 25% per year compound interest (in ₹)?
17. 17.What amount will ₹22800 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.What amount will ₹15600 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.A town has 38900 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹8000 at 15% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 33400 people. The population grows by 20% every year. What will the population be after 2 years?
22. 22.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹39400 grow to in 2 years at 20% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹50000 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹37200 at 25% per year for 2 years, compounded every year (in ₹).
26. 26.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
27. 27.Find the compound interest on ₹51800 at 20% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹8800 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹14200 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹18000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?
32. 32.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
33. 33.A town has 42500 people. The population grows by 4% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹21300 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹50200 at 20% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹2600 at 8% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹26100 at 10% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹11200 at 5% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).

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