Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 961 · 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 ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹45100 at 20% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹34900 at 10% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹29500 at 15% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹15900 grow to in 1 year at 15% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹46400 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 38500 people. The population grows by 10% every year. What will the population be after 2 years?
11. 11.What amount will ₹3500 grow to in 3 years at 20% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹2800 at 15% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹24400 at 25% per year for 2 years (in ₹)?
14. 14.What amount will ₹30700 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹57200 at 15% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹56900 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹11400 at 10% per year for 2 years (in ₹)?
18. 18.A town has 30800 people. The population grows by 5% every year. What will the population be after 2 years?
19. 19.A town has 45500 people. The population grows by 10% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹40700 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹59300 at 12% per year for 1 year, compounded every year (in ₹).
24. 24.A scooter is worth ₹58700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
25. 25.What amount will ₹36100 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹17700 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹11200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
28. 28.What amount will ₹33800 grow to in 1 year at 15% per year compound interest (in ₹)?
29. 29.What amount will ₹18800 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹14000 at 5% per year for 2 years (in ₹)?
32. 32.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
33. 33.A town has 6800 people. The population grows by 5% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹10200 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹34000 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹25300 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹17600 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹9500 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹40400 at 25% per year for 2 years (in ₹)?

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