Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 148 · 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 ₹5000 at 10% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹32700 at 10% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹42500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
5. 5.What amount will ₹38800 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹55400 grow to in 1 year at 10% per year compound interest (in ₹)?
7. 7.What amount will ₹28800 grow to in 3 years at 25% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
9. 9.What amount will ₹41200 grow to in 2 years at 25% per year compound interest (in ₹)?
10. 10.What amount will ₹15200 grow to in 2 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹54000 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹31100 grow to in 1 year at 4% per year compound interest (in ₹)?
13. 13.What amount will ₹22400 grow to in 2 years at 5% per year compound interest (in ₹)?
14. 14.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹51600 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹11700 at 20% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹42800 at 5% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹9600 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
21. 21.What amount will ₹26300 grow to in 1 year at 12% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹44400 at 15% per year for 2 years (in ₹)?
23. 23.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
24. 24.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹13800 at 20% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹56800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹44000 at 25% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹48000 at 15% per year for 3 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 is the difference between the compound interest and the simple interest on ₹54000 at 20% per year for 2 years (in ₹)?
31. 31.What amount will ₹19400 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹30700 at 10% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹9000 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹55000 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹33600 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹28000 at 5% per year for 2 years (in ₹)?
37. 37.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.What amount will ₹40000 grow to in 2 years at 8% per year compound interest (in ₹)?
40. 40.A town has 56600 people. The population grows by 10% every year. What will the population be after 2 years?

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