Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 978 · 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 ₹46000 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.What amount will ₹20700 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹15500 at 4% per year for 1 year, compounded every year (in ₹).
4. 4.A scooter is worth ₹4800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
5. 5.Find the compound interest on ₹30000 at 10% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹22200 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.A town has 18300 people. The population grows by 5% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹15600 at 25% per year for 2 years (in ₹)?
10. 10.What amount will ₹11200 grow to in 2 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
13. 13.What amount will ₹43700 grow to in 1 year at 8% per year compound interest (in ₹)?
14. 14.What amount will ₹54200 grow to in 1 year at 4% per year compound interest (in ₹)?
15. 15.A town has 59600 people. The population grows by 15% every year. What will the population be after 2 years?
16. 16.A town has 42500 people. The population grows by 12% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹45300 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹40000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹17400 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹12500 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹24600 grow to in 1 year at 8% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹47000 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹48700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹31600 at 25% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹21600 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹19300 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹42800 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
31. 31.What amount will ₹47600 grow to in 2 years at 15% per year compound interest (in ₹)?
32. 32.What amount will ₹14100 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.What amount will ₹52300 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹52000 at 15% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹22500 at 10% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹52400 at 5% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹16500 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).

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