
Math 8 - Unit 9 Review
Authored by Sara Scheffler
Mathematics
8th Grade
CCSS covered

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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A student's parents invested $5,000 in a college savings account that pays 4.85% annual simple interest. No additional deposits or withdrawals will be made.
Which amount is closest to the interest earned on the account at the end of 15 years?
$5,174.11
$10,174.11
$3,637.50
$8,637.50
Answer explanation
Choose the interest earned on the account after 15 years, which is closest to $3,637.50.
Tags
CCSS.7.RP.A.3
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An employee put $5,000.00 in a retirement account that offers 9% interest compounded annually. The employee makes no additional deposits or withdrawals. Which amount is closest to the interest the employee will have earned at the end of 5 years?
$229.09
$450.00
$2,250.00
$2,693.12
Tags
CCSS.HSF-LE.A.1C
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Caiden deposited $475 in an account that pays an interest rate of 3.8% compounded annually. What will be his balance after 15 years?
$827.52
$831.10
$839.45
$846.80
Tags
8.12.D
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Carly deposited $800 in an account that earns 2% interest compounded annually. Lara deposited $800 in an account that earns 2% simple interest. How much will each girl have in their account at the end of 8 years if they make no withdrawals or deposits?
Carly: $937.33
Lara: $928
Carly: $927.33
Lara: $918
Carly: $939.33
Lara: $938
Carly: $928
Lara: $937.33
Answer explanation
Carly's account balance after 8 years with compound interest is $937.33, while Lara's account balance with simple interest is $928. Therefore, the correct choice is Carly: $937.33, Lara: $928.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Olivia will deposit $1,530 in an account that earns 6% simple interest every year. Her sister Melinda will deposit $1,500 in an account that earns 8% interest compounded annually. The deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts. Which statement about the balances of Olivia's account and Melinda's account at the end of 3 years is true?
Olivia's account will have about $5.40 more than Melinda's account.
Olivia's account will have about $84.17 more than Melinda's account.
Melinda's account will have about $5.40 more than Olivia's account.
Melinda's account will have about $84.17 more than Olivia's account.
Answer explanation
Melinda's account will have about $84.17 more than Olivia's account due to the higher interest rate and compounding effect.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is 8% as a decimal?
0.8
0.08
0.008
8.0
Answer explanation
To convert a percentage to a decimal, move the decimal point two places to the left. Therefore, 8% as a decimal is 0.08.
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