Simple and Compound Interest

Anne deposited $500 in an

account that earns 6% simple annual interest.

Shelly deposited $500 in an account that earns 6% annual interest

compounded annually. They leave the

money in the account for 4 years. Which

statement is true about the two investments after 4 years?

• Shelly will have $131.24 more in her account

  than Anne has in her account.

• They will have the same

  amount in their accounts.

• Shelly will have $11.24 more

  in her account than Anne has in her account.

• Anne will have $11.24 more in

  her account than Shelly has in her account.

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CCSS.7.EE.B.3

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In some investment accounts interest is computed on interest that has been earned in previous years. What is this method of computing interest called?

• compound interest

• double interest

• simple interest

• not enough information

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When calculating

interest, how do you write the percent?

• a fraction

• a decimal

• a round number

• not enough information

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Steve deposited

$5,000 in a savings account that pays 4% interest compounded annually. Which

equation could be used to find the value of the account after 3 years?

• A = 5,000(1 + 4)³

• A = 5,000(1 + 0.04)³

• A = 5,000(1 + 0.4) x 3

• A = 5,000(0.04)³

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CCSS.7.RP.A.3

Jared

invests $10,000 in a savings account that pays 3% simple interest. How many years will it take for the account

to grow to $12,700, if he makes no withdrawals or deposits?

• 7 years

• 12 years

• 9 years

• 22 years

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CCSS.6.EE.B.7

Karl used his credit card to buy a 90-inch HD flat-screen TV for $2,600. The credit card company charges 28% compound interest per year. If Karl made no payments for 2 years, how much would he owe the credit card company?

• $5,069.84

• $4,772.18

• $4,259.84

• $4,056.00

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CCSS.7.EE.B.3

CCSS.7.RP.A.3

The simple interest formula is I=Prt.  What does the t represent?

• Principle
• Interest
• Time
• Percent Rate

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Find the total amount in the account to the nearest cent if the interest is compounded annually. 
$2750 at 8% for 2 years

• $220
• $440
• $660

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

• the original 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

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CCSS.7.RP.A.3

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

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