Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 709 · 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 town has 38900 people. The population grows by 15% every year. What will the population be after 1 year?
2. 2.What amount will ₹23000 grow to in 1 year at 4% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹39000 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹35200 grow to in 2 years at 5% per year compound interest (in ₹)?
6. 6.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
7. 7.What amount will ₹6500 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹34000 grow to in 3 years at 10% per year compound interest (in ₹)?
11. 11.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹18100 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹36400 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹59600 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹43600 grow to in 2 years at 15% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹20000 at 5% per year for 2 years (in ₹)?
17. 17.A town has 6300 people. The population grows by 4% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹49700 at 10% per year for 2 years (in ₹)?
19. 19.What amount will ₹25400 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.What amount will ₹2600 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹41600 at 8% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹39900 grow to in 1 year at 12% per year compound interest (in ₹)?
25. 25.What amount will ₹28200 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.What amount will ₹25000 grow to in 2 years at 4% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
28. 28.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
30. 30.What amount will ₹3200 grow to in 2 years at 25% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹46500 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹3100 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹53000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
37. 37.A scooter is worth ₹53500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹4500 grow to in 1 year at 15% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹20000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹35600 at 15% per year for 2 years (in ₹)?

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