Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 879 · 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 ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹14800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹52800 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
5. 5.What amount will ₹13800 grow to in 1 year at 5% per year compound interest (in ₹)?
6. 6.What amount will ₹2500 grow to in 2 years at 12% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹22100 at 25% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.A town has 5200 people. The population grows by 15% every year. What will the population be after 2 years?
10. 10.Find the compound interest on ₹52100 at 25% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹8100 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
13. 13.Find the compound interest on ₹8000 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 21200 people. The population grows by 15% every year. What will the population be after 2 years?
15. 15.Find the compound interest on ₹52000 at 20% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
18. 18.What amount will ₹3000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.What amount will ₹40600 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹34000 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹12800 at 15% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
26. 26.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹49200 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹55200 at 20% per year for 2 years (in ₹)?
30. 30.What amount will ₹48000 grow to in 1 year at 25% per year compound interest (in ₹)?
31. 31.What amount will ₹38200 grow to in 2 years at 10% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹36400 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹40100 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹49600 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹51800 at 12% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹28700 at 20% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹8000 at 20% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹25800 grow to in 2 years at 10% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹16500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
40. 40.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?

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