Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 818 · 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 is the difference between the compound interest and the simple interest on ₹27600 at 5% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹26900 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.A town has 7600 people. The population grows by 25% every year. What will the population be after 1 year?
4. 4.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹43900 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹46700 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What amount will ₹58100 grow to in 1 year at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹17000 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 33500 people. The population grows by 10% every year. What will the population be after 2 years?
11. 11.A town has 55100 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹42500 grow to in 2 years at 4% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹20800 at 5% per year for 2 years (in ₹)?
15. 15.What amount will ₹9000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.What amount will ₹3600 grow to in 2 years at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹37900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
19. 19.A scooter is worth ₹45000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
20. 20.A scooter is worth ₹5900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
21. 21.What amount will ₹57600 grow to in 3 years at 25% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹20400 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹36200 at 25% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹59800 at 8% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹58500 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹46700 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹17700 grow to in 1 year at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹43000 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹15900 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹29600 at 20% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹56400 at 25% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹17600 at 15% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹3400 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹24800 grow to in 2 years at 15% per year compound interest (in ₹)?

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