Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 13 · 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 ₹26200 at 10% per year for 2 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹44000 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹16500 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.A town has 59200 people. The population grows by 12% every year. What will the population be after 1 year?
5. 5.A scooter is worth ₹18000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹9000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹49200 at 25% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹6500 at 20% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
10. 10.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹18400 grow to in 1 year at 15% per year compound interest (in ₹)?
13. 13.What amount will ₹44800 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.What amount will ₹48700 grow to in 2 years at 10% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹37500 at 10% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹41300 at 20% per year for 2 years (in ₹)?
19. 19.What amount will ₹50000 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
21. 21.A scooter is worth ₹57500. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
22. 22.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹26800 at 15% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹22000 at 15% per year for 2 years (in ₹)?
26. 26.A town has 52600 people. The population grows by 15% every year. What will the population be after 1 year?
27. 27.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
28. 28.What amount will ₹14400 grow to in 1 year at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹20800 at 25% per year for 3 years, compounded every year (in ₹).
30. 30.A town has 6400 people. The population grows by 12% every year. What will the population be after 1 year?
31. 31.Find the compound interest on ₹8800 at 25% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 35000 people. The population grows by 12% every year. What will the population be after 1 year?
34. 34.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹9600 at 5% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹19200 at 15% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹30000 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹26000 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹38800 grow to in 1 year at 8% per year compound interest (in ₹)?

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