Class 8 Maths Worksheet: Compound Interest
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.
NameDateTime takenScore ___ / 40
- 1.A scooter is worth ₹60000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
- 2.Find the compound interest on ₹11200 at 15% per year for 1 year, compounded every year (in ₹).
- 3.Find the compound interest on ₹2800 at 10% per year for 2 years, compounded every year (in ₹).
- 4.What amount will ₹18600 grow to in 1 year at 15% per year compound interest (in ₹)?
- 5.What amount will ₹57300 grow to in 1 year at 15% per year compound interest (in ₹)?
- 6.Find the compound interest on ₹36800 at 12% per year for 1 year, compounded every year (in ₹).
- 7.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
- 8.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
- 9.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
- 10.A scooter is worth ₹32400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
- 11.A town has 21000 people. The population grows by 10% every year. What will the population be after 3 years?
- 12.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
- 13.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
- 14.What amount will ₹25600 grow to in 2 years at 15% per year compound interest (in ₹)?
- 15.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
- 16.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
- 17.Find the compound interest on ₹36800 at 25% per year for 3 years, compounded every year (in ₹).
- 18.What amount will ₹14000 grow to in 1 year at 15% per year compound interest (in ₹)?
- 19.What is the difference between the compound interest and the simple interest on ₹41400 at 20% per year for 2 years (in ₹)?
- 20.A town has 8100 people. The population grows by 20% every year. What will the population be after 2 years?
- 21.A scooter is worth ₹52400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
- 22.Find the compound interest on ₹42000 at 15% per year for 2 years, compounded every year (in ₹).
- 23.What amount will ₹19400 grow to in 1 year at 8% per year compound interest (in ₹)?
- 24.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
- 25.What is the difference between the compound interest and the simple interest on ₹58400 at 5% per year for 2 years (in ₹)?
- 26.A town has 11000 people. The population grows by 10% every year. What will the population be after 3 years?
- 27.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
- 28.What amount will ₹58200 grow to in 1 year at 10% per year compound interest (in ₹)?
- 29.What amount will ₹36600 grow to in 1 year at 12% per year compound interest (in ₹)?
- 30.What amount will ₹26400 grow to in 2 years at 10% per year compound interest (in ₹)?
- 31.Find the compound interest on ₹37500 at 8% per year for 2 years, compounded every year (in ₹).
- 32.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
- 33.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
- 34.A town has 47500 people. The population grows by 12% every year. What will the population be after 2 years?
- 35.What amount will ₹55100 grow to in 1 year at 15% per year compound interest (in ₹)?
- 36.A town has 5200 people. The population grows by 8% every year. What will the population be after 1 year?
- 37.What is the difference between the compound interest and the simple interest on ₹44000 at 20% per year for 2 years (in ₹)?
- 38.Find the compound interest on ₹27200 at 15% per year for 2 years, compounded every year (in ₹).
- 39.Find the compound interest on ₹34000 at 5% per year for 2 years, compounded every year (in ₹).
- 40.A scooter is worth ₹6400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
Answer key
- 55296
- 1680
- 588
- 21390
- 65895
- 4416
- 396
- 9261
- 72
- 27540
- 27951
- 16
- 32076
- 33856
- 32
- 336
- 35075
- 16100
- 1656
- 11664
- 50304
- 13545
- 20952
- 864
- 146
- 14641
- 16668
- 64020
- 40992
- 31944
- 6240
- 52
- 69984
- 59584
- 63365
- 5616
- 1760
- 8772
- 3485
- 5888
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