Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 219 · 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.What amount will ₹35000 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹37600 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹54000 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
5. 5.A town has 52100 people. The population grows by 20% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹36300 at 10% per year for 2 years (in ₹)?
7. 7.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹3600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
9. 9.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹7700 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹36800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹10800 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹7000 at 10% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹26000 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹41500 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.What amount will ₹12400 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.A town has 52300 people. The population grows by 20% every year. What will the population be after 2 years?
21. 21.What amount will ₹15700 grow to in 1 year at 4% per year compound interest (in ₹)?
22. 22.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹48500 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹17600 at 4% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹18000 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹4100 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹17200 at 25% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹36000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
29. 29.A town has 2200 people. The population grows by 20% every year. What will the population be after 1 year?
30. 30.What amount will ₹33500 grow to in 2 years at 20% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 8800 people. The population grows by 5% every year. What will the population be after 2 years?
34. 34.What amount will ₹33800 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹29300 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹15200 at 5% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹19700 at 4% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹56200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
39. 39.A scooter is worth ₹57200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?

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