Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 435 · 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.A town has 21600 people. The population grows by 25% every year. What will the population be after 2 years?
2. 2.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹10800 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹58000 at 5% per year for 2 years (in ₹)?
5. 5.What amount will ₹19100 grow to in 1 year at 12% per year compound interest (in ₹)?
6. 6.What amount will ₹20200 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.A town has 44600 people. The population grows by 20% every year. What will the population be after 2 years?
8. 8.What amount will ₹39200 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹5000 at 12% per year for 1 year, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹38300 at 10% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹52800 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹48900 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹31500 at 20% per year for 2 years (in ₹)?
14. 14.What amount will ₹57700 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹43300 at 20% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 31600 people. The population grows by 5% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹3800 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
19. 19.What amount will ₹40400 grow to in 2 years at 15% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹15500 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹55500 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.What amount will ₹22000 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.What amount will ₹9300 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹16000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 45800 people. The population grows by 20% every year. What will the population be after 1 year?
27. 27.What amount will ₹52900 grow to in 1 year at 12% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹25600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
30. 30.What amount will ₹12500 grow to in 1 year at 15% per year compound interest (in ₹)?
31. 31.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹22800 grow to in 2 years at 25% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
37. 37.What amount will ₹53000 grow to in 2 years at 20% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹7000 at 10% per year for 2 years (in ₹)?
39. 39.A town has 53200 people. The population grows by 15% every year. What will the population be after 2 years?
40. 40.What amount will ₹45900 grow to in 1 year at 20% per year compound interest (in ₹)?

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