Math 8 Vocabulary

What is the definition of Absolute Value?

• The number made by multiplying a whole number by itself.

• The distance from zero on a number line.

• Real numbers that cannot be represented with a fraction.

• Numbers that can be represented as a fraction.

Which of the following is an example of a Perfect Square?

• |3| = 3

• √2 = 1.4142135...

• -7 = -14/2

Fill in the blank: Real numbers can be rational or irrational numbers. They can be both positive or negative and are denoted by the symbol _____

• R

• Q

• Z

• N

Which of the following is NOT an example of an Irrational Number?

• √2 = 1.4142135...

• π = 3.14159265...

• 5.65

• ³√5 = 1.7099759...

Match the following words to their correct definitions:

• C

• Numbers that can be represented as a fraction, including all integers and decimal values that terminate or repeat.

• B

• The distance from zero on a number line.

• A

• The number made by multiplying a whole number by itself.

Fill in the blank: Integers include all the counting numbers and the number zero, but also include ______ values of the counting numbers. (No decimals.)

• negative

• fractional

• decimal

• positive

What is the definition of Whole Numbers?

• Whole numbers include all natural numbers, but also include the number zero.

• Whole numbers include only negative numbers.

• Whole numbers include only decimal numbers.

• Whole numbers include only fractions.

Which of the following is an example of a Natural Number?

• 0

• 1

• -1

• 2.5

In Algebra, what is a Variable?

• A symbol (usually a letter) that stands in for an unknown numerical value in an equation or an algebraic expression.

• A fixed number that never changes in value.

• A mathematical operation like addition or subtraction.

• A type of geometric shape used in equations.

In the expression 2x + 5y, what are the variables?

• x and y

• 2 and 5

• 2x and 5y

• x and 5