Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 790 · 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 ₹30800 grow to in 1 year at 5% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹12400 at 15% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹57100 at 15% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹8800 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹39500 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹25300. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹14000 at 15% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
9. 9.A town has 9000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.What amount will ₹16800 grow to in 2 years at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹43600 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹32000 grow to in 3 years at 10% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹51400 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹18800 at 25% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹43400 grow to in 1 year at 4% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹2000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
17. 17.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹21300 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.A town has 58600 people. The population grows by 15% every year. What will the population be after 1 year?
20. 20.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
21. 21.Find the compound interest on ₹12900 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹10100 grow to in 2 years at 10% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹14900 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹29300 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹24000 at 15% per year for 2 years (in ₹)?
27. 27.A scooter is worth ₹7700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
28. 28.A town has 53900 people. The population grows by 10% every year. What will the population be after 1 year?
29. 29.What amount will ₹12000 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹37600 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹47500 grow to in 2 years at 12% per year compound interest (in ₹)?
32. 32.What amount will ₹42800 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹58500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
34. 34.Find the compound interest on ₹55000 at 12% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹34500 at 10% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹21800 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹40800 grow to in 2 years at 20% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹7800 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹23200 at 10% per year for 1 year, compounded every year (in ₹).

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