Simple Interest

The rate is given as a percent (%).  Before using it in the simple interest formula, you must first convert it to a______.

• fraction
• decimal
• ratio
• dollar amount

The simple interest formula is I=Prt.  The P represents the principle.  The principle is ___________________.  

• the amount of money borrowed or deposited
• the percent interest for his year
• the amount taxed
• the amount the bank owes you for being a customer at their bank

Write the percent as a decimal. 
4.3%

• 4.3
• .43
• .043
• 4300

Write the decimal as a percent. 
0.37

• 37%
• 3.7%
• .37%

What does the "I" in the interest formula stand for?

• Important
• Interest
• Internet
• Igloo

You lend $240 to your friend.  He pays you back $270.  What interest rate did you charge your friend?

• 88%
• 20%
• 12.5%
• 10%

Anna invested $2,500 at an annual rate of 5%.  How long will it take until Anna earns $1,125 in interest?

• 5 years
• 8 years
• 10 years
• 9 years

Emilio borrows $1200 from a bank with 8% simple interest per year.  How much will he have to pay back total in 2 years?

• $150
• $192
• $1350
• $1392

Tags

CCSS.7.RP.A.3

Jenna borrowed $5,000 for 3 years and had to pay $1,350 simple interest at the end of that time. What rate of interest did she pay?

• 6%

• 6%

• 8%

• 9%

Tags

CCSS.7.RP.A.3

Setting aside a certain amount of money (recommended 10%) into your savings account before spending on needs and wants

• opportunity costs

• pay yourself first

• spending plan

• surplus