Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 240 · 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 ₹54100 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
4. 4.A town has 39500 people. The population grows by 15% every year. What will the population be after 1 year?
5. 5.What is the difference between the compound interest and the simple interest on ₹54000 at 15% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹48300 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹56200 at 10% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹23100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹41600 at 10% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹31200 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹59200 at 25% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
15. 15.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.What amount will ₹17500 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
19. 19.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
20. 20.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.What amount will ₹18400 grow to in 2 years at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹17400 at 12% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹4800 at 12% per year for 1 year, compounded every year (in ₹).
25. 25.A town has 37500 people. The population grows by 10% every year. What will the population be after 1 year?
26. 26.What amount will ₹31400 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹53000 at 10% per year for 2 years (in ₹)?
28. 28.What amount will ₹14900 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹36000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
30. 30.A scooter is worth ₹14800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹12500 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹35200 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹36400 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹33900 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹58800 grow to in 2 years at 25% per year compound interest (in ₹)?
36. 36.A town has 36600 people. The population grows by 10% every year. What will the population be after 1 year?
37. 37.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
38. 38.A town has 33000 people. The population grows by 10% every year. What will the population be after 3 years?
39. 39.A scooter is worth ₹3800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹9100 at 12% per year for 1 year, compounded every year (in ₹).

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