Understanding Simple Interest

How do you calculate simple interest?

• Interest = Principal x Rate x Time

• Interest = Principal - Rate x Time

• Interest = Principal + Rate x Time

• Interest = Principal / Rate x Time

Tags

CCSS.7.RP.A.3

If the principal amount is $500, the interest rate is 5%, and the time period is 2 years, what is the simple interest?

• $75

• $100

• $50

• $25

Tags

CCSS.7.RP.A.3

What is the formula to find the principal amount in simple interest?

• Principal = (Simple Interest * Time) / Rate

• Principal = (Simple Interest * 100) / (Rate * Time)

• Principal = (Rate * Time) / Simple Interest

• Principal = (Simple Interest * Rate) / Time

Tags

CCSS.7.RP.A.3

If the simple interest is $120, the interest rate is 8%, and the time period is 3 years, what is the principal amount?

• $500

• $700

• $1000

• $300

Tags

CCSS.7.RP.A.3

How can you determine the interest rate in a simple interest calculation?

• Rate = Principal x Time / Interest

• Rate = Principal / (Interest x Time)

• Rate = Time / (Principal x Interest)

• Rate = Interest / (Principal x Time)

Tags

CCSS.7.RP.A.3

If the principal amount is $800, the simple interest is $160, and the time period is 4 years, what is the interest rate?

• 2%

• 5%

• 10%

• 8%

Tags

CCSS.7.RP.A.3

How do you solve for the time period in a simple interest problem?

• time = Principal * Rate / (100 + Interest)

• time = Principal * Rate / (100 * Interest)

• time = Principal * Rate / (100 - Interest)

• time = Principal * Interest / (100 * Rate)

Tags

CCSS.7.RP.A.3

If the principal amount is $1000, the interest rate is 6%, and the simple interest is $180, what is the time period?

• 5 years

• 3 years

• 2 years

• 4 years

Tags

CCSS.7.RP.A.3

What are some real-life applications of simple interest?

• Mortgage interest, car loans, student loans

• Bank loans, credit card interest, savings accounts

Tags

CCSS.7.RP.A.3

Explain how simple interest is used in banking and loans.

• Simple interest is used to calculate compound interest on loans and deposits.

• Simple interest is used to determine the total amount on loans and deposits.

• Simple interest is used to determine the principal amount on loans and deposits.

• Simple interest is used to determine the interest amount on loans and deposits by multiplying the principal amount, interest rate, and time period.

Tags

CCSS.7.RP.A.3