MathScore Practice: Simple Interest

Description: Calculate simple interest based on a principle balance, interest rate, and time span using the formula, I=PRT.

Adaptive Learning Progression: Numbers get bigger.

Sample Levels (out of 3)

Answer the following questions involving simple interest. Input all answers to the nearest dollar

1.	Interest Rate: 4% each year Starting Balance: $115 Time Passed: 14 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance:
2.	Interest Rate: 2% each year Starting Balance: $174 Time Passed: 10 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance:
3.	Interest Rate: 9% each year Starting Balance: $139 Time Passed: 2 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance:

Answer the following questions involving simple interest. Input all answers to the nearest dollar

1.	Interest Rate: 10% each year Starting Balance: $794 Time Passed: 13 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance:
2.	Interest Rate: 8% each year Starting Balance: $414 Time Passed: 12 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance:
3.	Interest Rate: 3% each year Starting Balance: $673 Time Passed: 1 years How much interest has accrued if we are using simple interest? What is the new total balance? Interest: Total balance: