Simple interest: find the total amount

Grade 7 math · Fieldbook Learning

Name ______________________ Date __________

Use interest = principal × rate × time, with the rate as a percent per year.

$900 is invested at 10% simple interest per year for 3 years. How much money is there at the end?
$800 is invested at 10% simple interest per year for 1 year. How much money is there at the end?
$200 is invested at 10% simple interest per year for 3 years. How much money is there at the end?
$700 is invested at 5% simple interest per year for 2 years. How much money is there at the end?
$400 is invested at 4% simple interest per year for 1 year. How much money is there at the end?
$1100 is invested at 4% simple interest per year for 1 year. How much money is there at the end?
$1100 is invested at 4% simple interest per year for 4 years. How much money is there at the end?
$2000 is invested at 5% simple interest per year for 4 years. How much money is there at the end?
$2900 is invested at 2% simple interest per year for 1 year. How much money is there at the end?
$800 is invested at 5% simple interest per year for 2 years. How much money is there at the end?
$1100 is invested at 2% simple interest per year for 1 year. How much money is there at the end?
$1300 is invested at 2% simple interest per year for 4 years. How much money is there at the end?
$4300 is invested at 3% simple interest per year for 4 years. How much money is there at the end?
$2500 is invested at 5% simple interest per year for 2 years. How much money is there at the end?
$3100 is invested at 1% simple interest per year for 1 year. How much money is there at the end?
$1800 is invested at 6% simple interest per year for 6 years. How much money is there at the end?
$2200 is invested at 12% simple interest per year for 4 years. How much money is there at the end?
$8000 is invested at 9% simple interest per year for 5 years. How much money is there at the end?
$3900 is invested at 5% simple interest per year for 2 years. How much money is there at the end?
$4600 is invested at 6% simple interest per year for 5 years. How much money is there at the end?

Answer key: Simple interest: find the total amount

$1170.00
$880.00
$260.00
$770.00
$416.00
$1144.00
$1276.00
$2400.00
$2958.00
$880.00
$1122.00
$1404.00
$4816.00
$2750.00
$3131.00
$2448.00
$3256.00
$11600.00
$4290.00
$5980.00

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