Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 89 · 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 ₹24000 at 20% per year for 1 year, compounded every year (in ₹).
2. 2.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
3. 3.What amount will ₹37600 grow to in 2 years at 25% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹17200 at 15% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹35000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹7200 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹25000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹26500 at 20% per year for 3 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
12. 12.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
13. 13.A town has 32000 people. The population grows by 25% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹8900 at 25% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹29000 at 10% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹16300 grow to in 2 years at 20% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹43700 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹26200 at 10% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹43600 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹26900 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹27700 at 20% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹10800 at 25% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹44400 at 20% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹22000 grow to in 2 years at 5% per year compound interest (in ₹)?
27. 27.What amount will ₹32700 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹14000 at 10% per year for 2 years (in ₹)?
31. 31.A scooter is worth ₹23000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
32. 32.A town has 29300 people. The population grows by 10% every year. What will the population be after 1 year?
33. 33.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹6700 at 10% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹56800 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹18100 at 20% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹23300 grow to in 1 year at 20% per year compound interest (in ₹)?

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