Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 763 · 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 ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹57500 at 12% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹13100 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.A town has 51600 people. The population grows by 25% every year. What will the population be after 2 years?
6. 6.Find the compound interest on ₹12000 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
8. 8.Find the compound interest on ₹33500 at 20% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
10. 10.What amount will ₹3200 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What amount will ₹36000 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
16. 16.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹31200 at 15% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹3600 at 5% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹48800 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹41100 at 10% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹18300 at 10% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹46800 at 25% per year for 2 years (in ₹)?
23. 23.A town has 44400 people. The population grows by 5% every year. What will the population be after 2 years?
24. 24.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹20800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹35600 at 5% per year for 2 years (in ₹)?
27. 27.A town has 10800 people. The population grows by 25% every year. What will the population be after 1 year?
28. 28.A town has 42500 people. The population grows by 20% every year. What will the population be after 3 years?
29. 29.A scooter is worth ₹24100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹51300 at 10% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹15500 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹17000 at 4% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹6400 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.A town has 11900 people. The population grows by 15% every year. What will the population be after 1 year?
35. 35.What amount will ₹6300 grow to in 1 year at 12% per year compound interest (in ₹)?
36. 36.A town has 25600 people. The population grows by 5% every year. What will the population be after 1 year?
37. 37.Find the compound interest on ₹26400 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
39. 39.Find the compound interest on ₹5400 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹26700 grow to in 1 year at 4% per year compound interest (in ₹)?

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