Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 179 · 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.What amount will ₹15700 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹50500 grow to in 1 year at 20% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹31200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹11000 at 20% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹25200 at 25% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
10. 10.A town has 14500 people. The population grows by 15% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹33600 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹6900 at 10% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹19200 at 10% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹15800 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹9000 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹16700 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹42500 grow to in 2 years at 12% per year compound interest (in ₹)?
21. 21.A town has 58600 people. The population grows by 20% every year. What will the population be after 1 year?
22. 22.What amount will ₹58700 grow to in 1 year at 8% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹38400 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹16300 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹3100 at 4% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹39600 at 25% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹28400 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 54300 people. The population grows by 10% every year. What will the population be after 2 years?
31. 31.What is the difference between the compound interest and the simple interest on ₹52400 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹17300 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹51200 at 5% per year for 2 years (in ₹)?
34. 34.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
35. 35.What amount will ₹10000 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
38. 38.What amount will ₹28400 grow to in 2 years at 25% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹50800 at 25% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).

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