2019-2020 8th Grade Math 1st Semester Review

Which of the following represents the number 0.0000457 in scientific notation?

• 4.57 x 10⁵

• 4.57 x 10⁶

• 4.57 x 10^-5

• 4.57 x 10^-6

Tags

CCSS.8.EE.A.3

Determine the mean absolute deviation of the following set of data. 35, 12, 16, 24, 18, 12, 23

• 44

• 20

• 7.33

• 6.28

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Solve the following equation for x.
 $\frac{3}{4}x\ +\ \frac{1}{2\ }=\ \frac{3}{2}x\ \ +\ 2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \$  

• x = 2

• x = -2

• x = 4

• x = -4

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Jason deposited $500 into a savings account that earns 1.75% simple interest. How much will Jason have in his account after 8 years?

• $70

• $74.44

• $570

• $574.44

Tags

CCSS.7.RP.A.3

Which equation represents the line in the graph?

• $y\ =\ \frac{1}{3}x\ -\ 6$

• $y\ =\ -\frac{1}{3}x\ -\ 6$

• $y\ =\ 3x\ -6$

• $y\ =\ \frac{2}{3}x\ -6$

Tags

CCSS.7.RP.A.2D

Which is a true statement about the table?

• It is a function because each input has exactly one output.

• It is not a function because each output has more than one input.

• It is not a function because it does not contain the origin.

• It is not a function because the ratio between y and x is not constant.

Tags

CCSS.7.RP.A.2D

A tree in Sarah's yard grew 54 inches in the first 3 years after it was planted. If the tree continues to grow at this same rate, which graph best represents the growth rate of the tree in inches per year?

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2D

Which of the following is best determined by looking for a straight line that passes through the origin?

• determining whether a relation is a function

• determining proportionality

• determining slope

• determining mean absolute deviation

Tags

CCSS.7.RP.A.2D

Ruby is purchasing a new UHDTV for Christmas. She paid a deposit of $300 and is making monthly payments of $50. Which of the following equations can be used to represent the total cost of the UHDTV after x months of payments?

•  $y\ =\ 350x$  

•  $y\ =\ -50x\ +\ 300$  

•  $y\ =\ 300x\ +\ 50$  

•  $y\ =\ 50x\ +\ 300$  

Tags

CCSS.5.OA.B.3

Meredith is saving for her first year of college. Her total bill for the first year is $13,500. Her parents offer to pay $4000 of this bill and she is also receiving an academic scholarship for math in the amount of $3000. How much will Meredith need to save each month over the next year in order to pay the remaining balance of her bill?

• $1,125 a month

• $875 a month

• $791.67 a month

• $541.67 a month

Tags

CCSS.4.OA.A.3