Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 275 · 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 ₹7200 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹16000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
3. 3.Find the compound interest on ₹57400 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹42500 grow to in 2 years at 4% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹25000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹7000 at 20% per year for 2 years (in ₹)?
9. 9.What amount will ₹31100 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.A town has 39900 people. The population grows by 25% every year. What will the population be after 1 year?
11. 11.A scooter is worth ₹39800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹6800 at 15% per year for 2 years, compounded every year (in ₹).
13. 13.A town has 17900 people. The population grows by 12% every year. What will the population be after 1 year?
14. 14.What is the difference between the compound interest and the simple interest on ₹28000 at 15% per year for 2 years (in ₹)?
15. 15.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
17. 17.What amount will ₹26400 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.What amount will ₹50000 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
20. 20.What amount will ₹51400 grow to in 1 year at 8% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹54000 at 5% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹32100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
23. 23.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹41200 grow to in 2 years at 5% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹12100 at 10% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹23200 at 5% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹51800 at 5% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
31. 31.Find the compound interest on ₹24700 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹46300 at 15% per year for 1 year, compounded every year (in ₹).
33. 33.A scooter is worth ₹58000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
34. 34.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
36. 36.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
37. 37.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹12800 grow to in 2 years at 25% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.A town has 2200 people. The population grows by 8% every year. What will the population be after 1 year?

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