Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 247 · 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 ₹22200 at 5% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹47000 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.What amount will ₹36700 grow to in 2 years at 10% per year compound interest (in ₹)?
4. 4.What amount will ₹52800 grow to in 2 years at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹6700 at 25% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 34600 people. The population grows by 12% every year. What will the population be after 1 year?
7. 7.What amount will ₹59600 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.A town has 6800 people. The population grows by 25% every year. What will the population be after 2 years?
9. 9.A scooter is worth ₹41000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
10. 10.Find the compound interest on ₹39400 at 10% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 20000 people. The population grows by 10% every year. What will the population be after 3 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹31900 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹36100 at 20% per year for 2 years (in ₹)?
15. 15.What amount will ₹38800 grow to in 2 years at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹28200 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹18400 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
19. 19.What amount will ₹39300 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹23900 at 8% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹54500 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹8300 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹49100 grow to in 1 year at 5% per year compound interest (in ₹)?
28. 28.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.A town has 16300 people. The population grows by 4% every year. What will the population be after 1 year?
30. 30.A scooter is worth ₹10300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
32. 32.A scooter is worth ₹5000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
33. 33.What amount will ₹7000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
36. 36.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹26800 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
39. 39.What amount will ₹8400 grow to in 2 years at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹57300 at 10% per year for 2 years, compounded every year (in ₹).

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