Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 137 · 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 ₹28200 grow to in 1 year at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹40400 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.What amount will ₹51000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹13000 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
8. 8.What amount will ₹40400 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹41500 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹16800 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹20000 at 10% per year for 3 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹52400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹43500 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹18200 grow to in 2 years at 20% per year compound interest (in ₹)?
16. 16.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
17. 17.A town has 56400 people. The population grows by 5% every year. What will the population be after 1 year?
18. 18.What amount will ₹56600 grow to in 1 year at 8% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹38500 at 20% per year for 3 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹40200 at 10% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 34400 people. The population grows by 5% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹18700 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹14100 grow to in 1 year at 10% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹15400 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
27. 27.A town has 41500 people. The population grows by 20% every year. What will the population be after 3 years?
28. 28.Find the compound interest on ₹18000 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹12700 at 10% per year for 2 years (in ₹)?
30. 30.What amount will ₹46900 grow to in 1 year at 15% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹54500 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹43000 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What amount will ₹58800 grow to in 2 years at 15% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹35800 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹36400 at 20% per year for 2 years (in ₹)?
37. 37.What amount will ₹4800 grow to in 1 year at 10% per year compound interest (in ₹)?
38. 38.What amount will ₹34500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹9500 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹26800 at 5% per year for 2 years, compounded every year (in ₹).

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