Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 279 · 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.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
4. 4.A town has 35500 people. The population grows by 4% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
7. 7.A scooter is worth ₹19800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹42800 at 20% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹5200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹16000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹52500 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹45000 at 20% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
16. 16.What amount will ₹59800 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹3500 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹37500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
23. 23.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹14800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹48400 at 20% per year for 2 years (in ₹)?
26. 26.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
27. 27.Find the compound interest on ₹28000 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹35300 at 12% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹31500 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹39000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
34. 34.What amount will ₹38400 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹17800 at 20% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹41200 at 15% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹17000 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹55000 at 12% per year for 2 years, compounded every year (in ₹).

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