Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 970 · 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 ₹31500 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹46000 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹37300 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹52900 at 20% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹23100 at 15% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹9700 at 5% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.What amount will ₹32400 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹39600 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹33000 grow to in 3 years at 10% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹51000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹43100 at 20% per year for 2 years (in ₹)?
14. 14.What amount will ₹40300 grow to in 2 years at 10% per year compound interest (in ₹)?
15. 15.A town has 20000 people. The population grows by 4% every year. What will the population be after 2 years?
16. 16.Find the compound interest on ₹37500 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹5200 at 15% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹42700 at 10% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹38000 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹2000 at 15% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹17000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹2000 at 10% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹23500 at 20% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
27. 27.A town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹5800 at 20% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹11800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
30. 30.What amount will ₹6000 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹17100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹8000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹10800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹20000 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹54400 at 5% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹38400 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹38000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
40. 40.What amount will ₹46600 grow to in 2 years at 10% per year compound interest (in ₹)?

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