8th Math Practice STAAR

January 2016

  1. (8.2B)Carlos has a square tablecloth with a total area of 48 square feet. Which measurement is closest to the length of each side of the tablecloth in feet?
  1. 9.8 ft
  2. 5.0 ft
  3. 12.0 ft
  4. 6.9 ft
  1. (8.2C)The average distance from Earth to the sun is about miles. The average distance from Mars to the sun is about miles. When both planets are at their average distance from the sun, how much farther is Mars from the sun than Earth?
  1. 79,000,000 miles
  2. 47,000,000 miles
  3. 107,000,000 miles
  4. 233,000,000 miles
  1. (8.2D)You have 6 clay pots that you want to display in order from shortest to tallest. Which list has the heights of the pots in order from tallest to shortest?

Student Name:______

Math Teacher:______Period:______

  1. (8.2D)There are four students working on an assignment in a class. Mike has completed 1/9 of the assignment, Gwen has completed 11% of the assignment, Jorge has completed 0.12 of the assignment, and Tai has completed 1/8 of the assignment. Which of the following lists the students in order from least to greatest by the amount of the assignment they completed?
  1. Gwen, Mike, Jorge, Tai
  2. Tai, Jorge, Mike, Gwen
  3. Gwen, Jorge, Mike, Tai
  4. Tai, Mike, Gwen, Jorge
  1. (8.2D)As part of a science experiment, four students each planted some flower seeds. After one week the students compared the number of seeds that germinated with the number of seeds planted. Their results are shown in the table below.

Which list shows the results in order from least to greatest?

  1. 60%, C.
  1. D.
  1. (8.4B)The graph below shows the relationship between the number of brownie recipes and the number of cups of flour required.

Based on the information in the graph, what is the unit rate in cups flour per recipe?

  1. 2 cups per recipeC. 2.5 cups per recipe
  2. 3 cups per recipeD. 1.5 cups per recipe
  1. (8.4B)The graph below shows the relationship between the number of dollars a worker earns and the number of hours worked.

What does the slope of the graph represent?

  1. The number of hours worked to earn $320
  2. The amount of money earned per hour
  3. The amount earned for 40 hours of work
  4. The number of hours worked per dollar earned.
  1. (8.4C)Use the line graphed on the grid below.

Which best describes the slope of the line?

  1. 2 B. C. 3 D.
  1. (8.4C)What is the slope and y-intercept of the line in the graph below?
  1. slope 1, y-intercept -3
  2. slope 5, y-intercept -15
  3. slope , y-intercept -15
  4. slope y-intercept 3
  1. (8.4C)What is the slopeof the line represented by the table listed below?
  1. -20B. 5C. -4 D.
  1. (8.8C)What value of x makes this equation true?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

  1. (8.8C)Two friends mow lawns on a spring Saturday. Some people pay them their fee by handing them cash. Some people give them their fee in an envelope. They split the money they make evenly.

Which equation and solution is represented by the model.

  1. (8.8A)Renting video games from Game Fly costs $2.50 per game plus a monthly fee of $5.00. Renting video games from Redbox costs $5.00 per game with no monthly fee. The monthly cost to rent video games depends on the number of video games, v, rented. Which inequality represents the situation when the monthly cost at Game Fly is less than the monthly cost at Redbox?
  1. (8.8B) Which situation can be represented by this equation?
  1. Joe’s bucket started with 340 fl oz. of water and is filling at a rate of 5 fl oz. per minute. Mia’s bucket started with 650 fl oz. of water and is draining at a rate of 8 fl oz. per minute. How many minutes, x, must pass before the two buckets are equal?
  1. Mason started a bank account with $340 and spends $8 a week. Carter started his bank account with $650 and adds $5 to his savings each week. What is x, the number of weeks when their bank accounts will have the same amount?
  1. Chandler has 340 cans of food for the food drive. He collects 5 more cans every day. Mabel has 650 cans and collects 8 more every day. What is x, the number of days needed to pass that they will have the same number of cans?
  1. Not Here
  1. (8.5B)A 7-inch candle burns at a rate of 2 inches an hour. Which equation represents the relationship between y, the height of the candle in inches, and x, the number of hours the candle burns?
  1. C.
  2. D.
  1. (8.5A)Which one of the following represents a proportional relationship?
  1. Shari charges $7 per hour for babysitting plus $5 travel fee to cover gas, c=7h+5

  1. (8.5I)To raise money, the school math team is selling cheese and sausage. The team makes $2 on each crock of cheese and $3 on each sausage roll that they sell. Which equation shows the total profit, p, the math team will make for selling, c, the number of crocks of cheese and s, the number of sausage rolls?
  1. (8.5I)Which graph represents the equation
  1. (8.5I)The table of ordered pairs shows the coordinates of two points on the graph of a function. Which equation describes the function?
  1. (8.9A)Which ordered pair represents a solution to both equations shown on the graph?
  1. (-1, -2)B. (0 ,4) C. (3, 2) D. (-2, -1)
  1. (8.3A)A square has a side length of inches. This square is dilated by a scale factor of 0.8 to create a new square. What is the side length of the new square?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

  1. (8.3A)Figure I and Figure II are similar polygons.

What proportion must be true?

  1. C.
  1. D.
  1. (8.3C)Rectangle is dilated to form rectangle ´ using the origin as the center of dilation.

Which algebraic representation best describes the dilation?

  1. (8.3C)Triangle has thefollowing vertices, and . Triangle is dilated with the origin as the center of dilation using the algebraic representation

Which of the following will NOT be a vertex of the dilation?

  1. C.
  1. D.
  1. (8.10C)Parallelogram was transformed to form parallelogram

Which rule describes the transformation that was used to form parallelogram ?

  1. C.
  2. D.
  1. (8.10C) What does the algebraic representation represent?
  1. Each point of a figure will translate 1 unit left and 2 units down.
  2. Each point of a figure will translate 1 unit left and 2 units up.
  3. Each point on a figure will translate 1 unit right and 2 units up.
  4. Each point on a figure will translate 1 unit right and 2 units down.
  1. (8.10C)The coordinate grid below shows triangle and its image triangle.

Which best describes the transformation used to create triangle

  1. Reflection over the x-axis
  2. Translated 1 unit right and 1 unit down
  3. Rotated 90 clockwise
  4. Rotated 180 clockwise
  1. (8.8D)In the sketch below, ∠ is an exterior angle of ABC. Which of the statements below is not true?
  1. The value of x equals 110, because adding the two interior angles will equal the nonadjacent exterior angle.
  1. The value of because these angles are a linear pair and are supplementary.
  1. The value of y equals 70, because the sum of theinterior angles of a triangle equal 180.
  1. The value of x equals 70, because the sum of the interior angles of a triangle equal 180.
  1. (8.8D)Lines l and m are parallel. The measure of angle 1 is and the measure of

angle 2 is

What is the measure of angle 8?

  1. 25°B. 54° C. 126° D. 45°
  1. (8.10D)The side length of a regular pentagon is dilated by a scale of to create a new pentagon. Which of the following statements is true?
  1. The area of the new pentagon is the area of the original pentagon.
  1. The area of the new pentagon is the area of the original pentagon.
  1. The area of the new pentagon is the area of the original pentagon.
  1. The area of the new pentagon is the area of the original pentagon.
  1. (8.10B)A transformation is applied to a figure to create a new figure. Which transformation does not preserve congruence?
  1. A reflection across the x-axis
  2. A translation 7 units down
  3. A dilation by a scale factor of 5
  4. A rotation of 90° clockwise
  1. (8.6A)A hatbox in the shape of a cylinder is modeled below. The diameter of the cylinder is 24 inches. The height of the cylinder is 8 inches.

The volume of a cylinder can be found by using the formula. Which expression can be used to determine, the area of the base of this hatbox in square inches?

  1. C.
  1. D.
  1. (8.7C) To get from home to work, Felix can either take a bike path through the rectangular park, or ride his bike along two sides of the park.

How much farther would Felix travel by riding along two sides of the park than he would by taking the path through park?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

  1. (8.7A)The dimensions of a cylindrical water tank are shown below.

Which of the following is the best estimate of the volume of this water tank?

  1. 58,320 yd³
  2. 3,240 yd³
  3. 14,580 yd³
  4. 19,440 yd³
  1. (8.7A)A ball shaped like a sphere has a radius of approximately 2 inches. Which of the following is the best estimate of the volume of the ball?
  1. 32 in.³
  2. 11 in.³
  3. 25 in.³
  4. 17 in.³
  1. (8.7A)Chris made a wooden cone with radius of 1.9 inches and a height of 15 inches. Which of the following is the best estimate of the volume of this cone?
  1. 60 in.³
  2. 30 in.³
  3. 180 in.³
  4. 90 in.³
  1. (8.7B)Sally has a birdhouse with rectangular walls, a rectangular bottom, and a rectangular entry, like the one modeled below.

She will paint the four outside walls but not the bottom or the roof of the birdhouse. What is the area that Sally will paint?

  1. 320 in.²
  2. 160 in.²
  3. 300 in.²
  4. 140 in.²
  1. (8.7B)A triangular prism is shown below.

Which best represents the total surface area of the prism?

  1. 164 square centimeters
  2. 200 square centimeters
  3. 132 square centimeters
  4. 182 square centimeters
  1. (8.7B)A painter charges $0.10 per square feet for paint. If the painter is going to paint just the sides, how much would the painter charge for paint?
  1. $25.10C. $12.60
  2. $125.60D. $251.20
  1. (8.7C)The diagram below represents the side view of a bike ramp.

Which of the following is closest to the value of x?

  1. 27 in. B. 32 in. C. 25 in. D. 20 in.
  1. (8.7C)A 10-foot ladder is leaning against a wall. The bottom of the ladder is 4 feet from the base of the wall, as shown below.

Which of the following is closest to the distance from the top of the ladder to the base of the wall?

  1. 9 ft B. 11 ft. C. 6ft D. 14 ft.
  1. (8.5G)Which set of ordered pairs represents y as a function of x?
  1. }
  2. {(-1, 0), (4, 3), (-7, -3), (-1, -8)}
  3. {(3, 2), (-4, -2), (3, 1), (-4, 1)}
  4. {(5, 4), (2, 3), (1, 1), (2, 4)}
  1. (8.5G)Which of the following mappings is not a function?
  1. B.

C.D.

  1. (8.5G)Which graph represents a function?
  1. (8.5F)Which of the following tables represents a proportional relationship?
  1. (8.5H)Which of the following does not represent a proportional situation?
  1. Jaime earns $10 per hour How many hours must she work to earn $200?
  1. Mark runs 2.5 miles every 30 minutes. If he runs at this rate for 2 hours, how far can he run?
  1. David has 15 video games. If he receives 4 video games for his birthday each year, how many video games will he have in 5 years?
  1. A bike tire rotates 8 times per second. How many rotations will the tire rotate in one minute?
  1. (8.5D)The scatterplot shows the number of free throws that different basketball players attempted and the number that each play made.

Based on the trend in the data, approximately how many free throws would a player be expected to make if he attempted 60 free throws?

  1. 50 B. 35 C. 25 D. 60
  1. (8.5D)The graph below shows the balance remaining on Jason’s loan after he makes each payment.

Based on this graph, what will be the balance remaining on Jason’s loan after he makes the 12th payment?

  1. $750B. $150C. $450 D. $300
  1. (8.11A)Thescatterplot below shows the relationship between the outside temperature and the number of students in Ms. Smith’s classes wearing sandals to school.

Which statement is true based on the scatterplot?

  1. There is a positive linear association between the temperature and the number of students wearing sandals.
  1. There is a negative linear association between the temperature and the number of student wearing sandals.
  1. There is no association between the temperature and the number of students wearing sandals.
  1. The data points are so scattered there is not a trend line.
  1. (8.11B)The chart below shows the perimeters of six triangles the class created for a class project.

Which of the following best describes the mean absolute deviation of this data?

  1. Less than 6 in.
  2. Between 6 in. and 7 in.
  3. Between 7 in. and 8 in.
  4. Larger than 8 in.
  1. (8.12D)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?
  1. Shelly will have $131.24 more in her account than Anne has in her account.
  1. They will have the same amount in their accounts.
  1. Shelly will have $11.24 more in her account than Anne has in her account.
  1. Anne will have $11.24 more in her account than Shelly has in her account.
  1. (8.12D)Travis invests $25,000 in a savings account that pays 2.75% simple interest. How much interest does he earn each year?
  1. $787.50
  2. $625.00
  3. $657.50
  4. $687.50