Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 85 · 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 ₹11000 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹36000 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
4. 4.A town has 51000 people. The population grows by 10% every year. What will the population be after 3 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹50200 at 20% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹50400 at 5% per year for 2 years (in ₹)?
7. 7.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹42800 at 15% per year for 2 years (in ₹)?
9. 9.What amount will ₹3700 grow to in 1 year at 8% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹25200 at 5% per year for 2 years (in ₹)?
11. 11.A town has 17900 people. The population grows by 10% every year. What will the population be after 1 year?
12. 12.A town has 37500 people. The population grows by 8% every year. What will the population be after 2 years?
13. 13.What amount will ₹9200 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹5600 at 10% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
16. 16.What amount will ₹5100 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹10700 at 10% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹29200 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹16600 at 10% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
21. 21.A town has 9600 people. The population grows by 15% every year. What will the population be after 2 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹12400 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹37200 at 20% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹46400 at 15% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹8800 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹22000 at 5% per year for 2 years (in ₹)?
30. 30.What amount will ₹21600 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹12500 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹42400 at 4% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹26800 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹54500 grow to in 1 year at 4% per year compound interest (in ₹)?
35. 35.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
37. 37.A town has 45900 people. The population grows by 4% every year. What will the population be after 1 year?
38. 38.What is the difference between the compound interest and the simple interest on ₹35600 at 5% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹23600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
40. 40.Find the compound interest on ₹50400 at 5% per year for 1 year, compounded every year (in ₹).

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