Simple & Compound Interest

Samuel calculated the Interest by multiplying the principal x rate x time. What kind of interest is this?

• simple interest

• compound interest

• complex interest

Type of interest that changes and is based off of the new balance, adding the principal plus the previous interest.

• simple interest

• compound interest

• complex interest

David

invests $10,000 in a savings account that pays 3.5% simple interest. If David

makes no withdrawals or deposits to the account, how much will be in the

account after 7 years.

• $2,450

• $11,750

• $12,450

• Not here

When calculating

interest, how do you write the percent?

• a fraction

• a decimal

• a round number

• not enough information

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

Heather

invested $8,000 in a 4-year Certificate of Deposit (CD) that pays 4.1% interest

compounded annually. What is the value of the CD at the end

of the 4 years?

• $9,394.92

• $9,312.00

• $1394.00

• $1312.00

Garrison

deposited $500 in an account that earns 5% annual interest compounded annually. If he makes no withdrawals or deposits, how

much interest will the account earn after 4 years?

• $600

• $100

• $607.75

• $107.75

Jerry borrowed $4,000 for 5 years at 6% simple interest rate. How much interest is that?

• $800
• $1,000
• $1,200
• $1,500

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

• Principle

• Interest

• Time

• Percent Rate

Write the percent as a decimal. 
4.3%

• 4.3
• .43
• .043
• 4300