Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 130 · 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 ₹16200 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹41500 at 20% per year for 2 years (in ₹)?
3. 3.What amount will ₹11000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.A town has 15900 people. The population grows by 10% every year. What will the population be after 2 years?
5. 5.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
7. 7.What amount will ₹48900 grow to in 2 years at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹34900 grow to in 1 year at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 8700 people. The population grows by 25% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹56000 at 25% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹12000 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹12800 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.What amount will ₹9800 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹31700 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹5000 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹3900 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
19. 19.What amount will ₹14100 grow to in 2 years at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹40700 at 25% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹45000 at 10% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹45100 at 10% per year for 2 years (in ₹)?
23. 23.What amount will ₹42200 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹21700 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹50800 grow to in 2 years at 5% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹56200 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹2800 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.A town has 38400 people. The population grows by 25% every year. What will the population be after 3 years?
30. 30.Find the compound interest on ₹5100 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹12800 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.A town has 2800 people. The population grows by 10% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹34600 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹22200 at 10% per year for 2 years (in ₹)?
36. 36.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
37. 37.What amount will ₹45100 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹29600 at 15% per year for 2 years (in ₹)?
39. 39.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
40. 40.A town has 7200 people. The population grows by 20% every year. What will the population be after 2 years?

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