8th Grade Math STAAR Review - Texas

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?

• 9.8 ft
• 5.0 ft
• 12.0 ft
• 6.9 ft

Tags

CCSS.8.EE.A.2

CCSS.8.NS.A.2

Juanita covered the outside of a gift box shaped like a rectangular prism with paper.  The box is 3.2 feet long, 2.1 feet wide, and 2.7 feet high.  Which of the following is closest to the total surface area of this box?

• 34 ft²
• 42 ft²
• 30 ft²
• 18 ft²

Tags

CCSS.6.G.A.1

CCSS.6.G.A.4

Leland swam from the dock east 26 meters.  He turned and swam another 10 meters south.   What is the value of x, the distance Leland swam to return to the dock?

• 36.2 m
• 24 m
• 27.9 m
• 16
  16.5 m

Tags

CCSS.8.G.B.7

CCSS.8.G.B.8

The value of y varies directly with x.  Which function represents the relationship between x  and y if y = 20/3  when x = 30?  

• y = 200x
• y = 2/9x
• y = 110/3x
• y = 9/2x

Tags

CCSS.8.F.A.3

CCSS.8.F.B.4

A weightlifter is adding plates of equal weight to a bar.  The table below shows the total weight, including the bar, that he will lift depending on the total number of plates on the bar.
Number of Plates                   Total Weight (lb)
2                                               115
4                                               185
6                                               255
8                                               325
Based on this information, which statement is true?

• The bar weighs 35 lb without any plates.
• The bar weighs 70 lb without any plates.
• The bar weighs 45 lb without any plates.
• The bar weighs 25 lb without any plates.

Tags

CCSS.8.EE.C.7

CCSS.8.F.B.4

A paper drinking cup in the shape of a cone has a height of 10 centimeters and a diameter of 8 centimeters.  Which of the following is closest to the volume of the cup in cubic centimeters?

• 167 cm³
• 209 cm³
• 670 cm³
• 502 cm³

Tags

CCSS.8.G.C.9

The mass of a substance varies directly with the volume of the substance.  The volume of 100 kilograms of the substance is 80 liters.  What is the volume, in liters, of 3.2 kilograms of this substance?

• 2.56 L
• 4 L
• 23.2 L
• 32 L

Tags

CCSS.8.EE.C.7

CCSS.8.F.B.4

Which set of ordered pairs represents y as a function of x?

• {(-9, 2), (0, 6), (1, -2), (-3, 6)}
• {(-1, 0), (4, 3), (-7, -3), (-1, -8)}
• {(3, 2), (-4, -2), (3, 1), (-4, 1)}
• {(5, 4), (2, 3), (1, 1), (2, 4)}

Tags

CCSS.8.F.A.1

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 V = Bh.  Which expression can be used to determine B, the area of the base of this hatbox in square inches?

• (24)²π
• (12)²π
• 8² * 12
• 12² * 8

Tags

CCSS.8.G.C.9

A computer was calculating the quotient of the circumference and diameter of a circle to approximate the value of π.  The lengths were 3.12, 3.24, 3 ¼ , and √10.  Which list shows the lengths in order from least to greatest?

• 3.12, 3¼ , 3.24, √10
• 3.12, √10, 3.24, 3¼
• √10, 3.12, 3.24, 3¼
•  3.12, 3.24, 3¼ , √10

Tags

CCSS.8.NS.A.1

CCSS.8.NS.A.2