Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 938 · 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 16400 people. The population grows by 25% every year. What will the population be after 2 years?
2. 2.A town has 57700 people. The population grows by 10% every year. What will the population be after 1 year?
3. 3.What amount will ₹17200 grow to in 1 year at 10% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹24000 at 10% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹49200 at 12% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹49600 at 5% per year for 2 years (in ₹)?
8. 8.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹5800 at 20% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹10400 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹43500 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹42400 at 25% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹35600 at 25% per year for 2 years (in ₹)?
18. 18.A town has 4100 people. The population grows by 20% every year. What will the population be after 2 years?
19. 19.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹19200 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.What amount will ₹17600 grow to in 2 years at 25% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹6400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
23. 23.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
24. 24.What amount will ₹56400 grow to in 2 years at 15% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹13100 at 15% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹5000 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹57500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹42800 grow to in 2 years at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹58900 grow to in 1 year at 12% per year compound interest (in ₹)?
30. 30.What amount will ₹12600 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹6300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹35500 at 15% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹36500 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹18000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹8300 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.A town has 12400 people. The population grows by 15% every year. What will the population be after 2 years?
37. 37.What is the difference between the compound interest and the simple interest on ₹26500 at 20% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹23200 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹59900 at 10% per year for 1 year, compounded every year (in ₹).

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