Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 243 · 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 ₹15000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹48400 grow to in 2 years at 25% per year compound interest (in ₹)?
3. 3.What amount will ₹9600 grow to in 2 years at 5% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹24500 at 20% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹32000 grow to in 3 years at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹5000 at 25% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹18100 grow to in 1 year at 12% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
10. 10.Find the compound interest on ₹38600 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹42600. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.A town has 57500 people. The population grows by 8% every year. What will the population be after 1 year?
13. 13.A scooter is worth ₹22500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹12800 at 15% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹34100 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹54600 grow to in 1 year at 4% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹29600 at 5% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹29800 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹44000 at 10% per year for 3 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
22. 22.What amount will ₹37000 grow to in 3 years at 10% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹30500 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹54900 at 20% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹3600 at 20% per year for 2 years (in ₹)?
28. 28.What amount will ₹55000 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹48700 at 5% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
31. 31.What amount will ₹23500 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹48800 at 25% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹7800 at 10% per year for 2 years (in ₹)?
34. 34.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
35. 35.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹10300 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹17300 at 20% per year for 2 years (in ₹)?
40. 40.What amount will ₹11400 grow to in 1 year at 10% per year compound interest (in ₹)?

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