Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 356 · 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.A town has 2000 people. The population grows by 5% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹3000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.A scooter is worth ₹48000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
4. 4.What amount will ₹3000 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹48800 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹11900 grow to in 1 year at 15% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹3200 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹18000 at 5% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹11400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
10. 10.Find the compound interest on ₹19600 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹58800 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹32800 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹32300 at 20% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹7200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
15. 15.A town has 47200 people. The population grows by 15% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹21200 at 25% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹26800 at 25% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹51300 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
20. 20.What amount will ₹57500 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.What amount will ₹27900 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹41100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹25800 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹38300 grow to in 1 year at 25% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹39300 at 10% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹32000 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹3700 at 15% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹39700 at 10% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹14800 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹31200 at 4% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹38100 at 20% per year for 2 years (in ₹)?
35. 35.What amount will ₹2000 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹29800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
37. 37.A town has 15000 people. The population grows by 8% every year. What will the population be after 2 years?
38. 38.What amount will ₹23000 grow to in 2 years at 20% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹31000 at 12% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹34400 at 15% per year for 2 years, compounded every year (in ₹).

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