8th Grade Math PSSA Review- Weber

1. Which expression has a value between –4 and –3?

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Tags

CCSS.8.NS.A.2

A company makes a puzzle that is made of 53 small plastic cubes. The puzzles are shipped in boxes that each contain 52 puzzles. The boxes are loaded into trucks that each contain 53 boxes. What is the total number of small plastic cubes in each truck?

• 5⁸

• 5¹⁸

• 125⁸

• 125¹⁸

Tags

CCSS.4.OA.A.3

x² = 144

• x = 12

• x = ±12

• x = 72

• x = ±72

Tags

CCSS.8.EE.A.2

The thickness of the skin on the human back is about

3 × 10^–3 meter. The thickness of the skin on the human eyelid is about 3 × 10^–4 meter. How many times as thick is the skin on the human back as on the human eyelid?

• 0.1

• 1

• 10

• 30

Tags

CCSS.8.EE.A.4

Craig uses a ruler to determine the length of two pieces of metal. He records the length of each piece of metal as a rational number. Which statement best explains whether the sum of the two lengths Craig recorded must also be a rational number?

• When adding two rational numbers a/b and c/d, the numerators a and c do not have to be integers. Therefore, the sum does not have to be a rational number.

• When adding two rational numbers a/b and c/d, the common denominator bd does not have to be an integer. Therefore, the sum does not have to be a rational number.

• When adding two rational numbers a/b and c/d, the sum is ac/bd, and both the numerator and denominator are integers. Therefore, the sum must be a rational number.

• When adding two rational numbers a/b and c/d, the sum is

  ad + bc/bd , and both the numerator and denominator are integers. Therefore, the sum must be a rational number.

Tags

CCSS.7.NS.A.1D

The human body contains about 1 × 10¹² bacteria. The human body contains about 4 × 10⁴ genes. The number of bacteria contained in the human body is how many times as great as the number of genes contained in the human body?

• 250

• 4,000

• 25,000,000

• 400,000,000

Tags

CCSS.8.EE.A.4

Which statement correctly describes the number 62/495 and its equivalent decimal notation?

• The number 62/495 is a rational number and its equivalent decimal notation is a repeating decimal number

• The number 62/495 is a rational number and its equivalent decimal notation is a terminating decimal number

• The number 62/495 is an irrational number and its equivalent decimal notation is a repeating decimal number

• The number 62/495 is an irrational number and its equivalent decimal notation is a terminating decimal number.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

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CCSS.8.NS.A.2

• The slope is a rational number that can be written as 13/9 .

• The slope is a rational number that can be written as 14/10.

• The slope is an irrational number that can be written as 13/9

• The slope is an irrational number that can be written as 14/10

Tags

CCSS.7.RP.A.2D

The lengths of the legs of two right triangles are listed below.

• triangle A: 5 inches and 5 inches

• triangle B: 4 inches and 6 inches

Which statement correctly compares the lengths, in inches, of the hypotenuses for the two triangles?

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Tags

CCSS.7.NS.A.2B