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STAAR Grade 8 Math

Last updated 9 months ago
40 questions
Required
1

A marble is in the shape of a sphere with a diameter of 13 millimeters.


Which measurement is closest to the volume of the marble in cubic millimeters?

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1

Which list shows the numbers in order from greatest value to least value?

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1

Which graph does NOT represent y as a function of x?

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1

A company employee had to read several financial reports. The scatterplot shows the lengths and reading times for those reports.


Which prediction of the time in minutes to read a 90-page report is best supported by the data?

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2
The table shows several pairs of x- and y-values for a linear relationship.


Create an equation in slope-intercept form that can used to model this relationship.

Move the correct answer to each box. Not all answers will be used.
Other Answer Choices:
\frac{4}{3}
-1
8
-2
\frac{3}{4}
2
-\frac{3}{4}
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1

Quadrilateral PQRT and quadrilateral KLMN are similar.


Which proportion must be true?

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1

Shakira has an investment account that she deposits $200.00 into each year. The table shows the amount of interest she earns in dollars and the ending balance each year.


Shakira continues to deposit $200.00 each year and earns the same interest rate for several years. Which statement about the ending balance each year is true?

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1

A triangular prism and its dimensions in feet are shown.


What is the total surface area of the prism in square feet?

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1

A tank starts off containing 1,060 gallons of water, and 35 gallons of water leaks from the tank every hour. At the same time, an empty pool is filled with water at a rate of 480 gallons per hour.

Which inequality represents all possible values for x, the number of hours that have passed when the tank contains less water than the pool?

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2
Triangle PQR is dilated with the origin as the center of dilation to create triangle P'Q'R'.




Complete the rule to represent the dilation from the triangle PQR to triangle P'Q'R'.

Move the correct answer to each box. Not all answers will be used.
Other Answer Choices:
6y
3y
2y
3x
2x
6x
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1

A printing store used 24 ounces of ink in 18 minutes. Which graph has a slope that best represents the average number of ounces of ink used per minute?

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1

A cylindrical swimming pool has a radius of 9 feet and a height of 4 ft. Which equation can be used to find V, the volume of the swimming pool in cubic feet?

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1

Which representation best describes a proportional relationship between x and y?

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2
The figures shown each have a set of parallel lines intersected by a transversal.


Based on the figures, which are measurements x, y, and z in degrees?

Move the correct answer to each box in the table. Each answer may be used more than once. Not all answer will be used.
Other Answer Choices:
30\degree
60\degree
120\degree
50\degree
100\degree
150\degree
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1

An artist started with some paint bottles. The artist buys the same number of additional bottles each week. The table shows the linear relationship between x, the number of weeks, and y, the number of bottles that the artist has.


How many bottles did the artist have at the start?

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1

A deposit of $1,200 is made into each of two bank accounts. No additional deposits or withdrawals will be made for 4 years.
  • Account I earns 1.5% annual simple interest.
  • Account II earns 1.5% interest compounded annually.
Which amount is closest to the different between the balances of the two accounts at the end of 4 years?

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2

A figure on the coordinate plane is transformed to create a new figure.

Determine whether each transformation preserves or does not preserve congruence.

Select the correct answer in each row.

Preserves Congruence
Does Not Preserve Congruence
A reflection across the y-axis
A rotation of 180\degree counterclockwise with the origin as the center of rotation
A dilation by a scale factor of 0.5 with the origin as the center of dilation
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1

A model representing a linear equation is shown.


Based on the model, what is the value of x?

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1

The diagram represents a side view of a roof in the shape of a right triangle.


Which measurement is closest to the length of the roof in feet?

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1

Square ABCD is translated 3 units to the right on a coordinate grid to create square A'B'C'D'. Which rule describes this translation?

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2

A segment is graphed on the grid.


Points will be plotted on the grid with the segment to show y as a function of x. Which ordered pairs can be added to the grid to show y as a function of x?

Select TWO correct answers.

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1

Two points are shown on a coordinate grid.


Which measurement is closest to the distance between points K and L?

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1

The value of y is directly proportional to the value of x. When x = \frac{3}{4}, y =56\frac{1}{4}. What is the value of y when x = \frac{1}{2}?

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1

A deposit of $7,912 is made into a new account that earns 5.75% simple interest. No additional deposits or withdrawals will be made for 2 years.

Which amount is closest to the balance in the account at the end of 2 years?

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1

A diagram of a toy box is shown. Its measurements are given in inches.


What is the total surface area of the toy box in square inches?

Enter your answer in the space provided.

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1

Which equation represents a proportional relationship between x and y?

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1

The radius of the planet Neptune is approximately 15,300 miles. How is this number of miles written in scientific notation?

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Pentagon NQRTW was dilated with the origin as the center to create pentagon N'Q'R'T'W'. Vertex R' is located at (6, 2).


Which rule best describes the dilation?

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2
The table shows a linear relationship between the variables x and y.


What are the slope and y-intercept of the linear relationship?

Choose the correct answer from each drop-down menu to complete the sentence.

The slope of the linear relationship is __________, and the y-intercept is __________.
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1

A cone has a radius of 12 centimeters and a height of 18 centimeters. What is the volume of the cone in cubic centimeters?

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1

A bakery delivers cookies to offices.
  • The bakery charges a $5 delivery fee.
  • The bakery charges a total of $20.00 for delivering 12 cookies.
  • The bakery charges a total of $27.50 for delivering 18 cookies.
Which equation represents the total charge in dollars, y, for a delivery of x cookies?

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1

Which scatterplot best represents a nonlinear relationship between the x-values and y-values?

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2
Determine whether the triangle with each set of side lengths is a right triangle or not a right triangle.

Move the correct answer to each box in the table. Each answer may be used more than once.
Other Answer Choices:
Not a right triangle
Right triangle
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1

Which graph or table shows the proportional relationship described by the function y=-2x?

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1

Triangle RST is rotated 270\degree counterclockwise about the origin of a coordinate plane to create triangle R'S'T'. Which rule describes this transformation?

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1

The line on the coordinate grid includes the hypotenuse of right triangle KLM.


Right triangle UVW is similar to right triangle KLM. Vertex W is at (0, -2). The slopes of the hypotenuses of the two triangles are equal.

Which ordered pair could be the coordinates of vertex V?

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2

Which numbers have a value greater than \pi?

Select TWO correct answers.

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1

What value of x makes this equation true?

2x+9-4x=x-12

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1

A catering company recorded the total number of cookies that were eaten at events with different numbers of guests. The scatterplot shows the results.


Based on the scatterplot, approximately how many cookies would be eaten at an event with 45 guests?

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1

A worker paints 4 cabinets in 8 hours. Which graph has a slope that best represents the number of cabinets the worker paints per hour?