Math Quiz Review

7x + 2y + 5

What are the variables in this algebraic expression?

• x

• y

• 5

• 7x

• +

A letter that represents a number is called a ________.

• variable

• coefficient

• constant

• term

Define Variable: A variable is

• A symbol (placeholder) used to represent an unspecified member of a set.  

• An integer less than zero.

• A mathematical sentence stating that two expressions are equal.

• Mathematical operations that are the opposites of each other like addition and subtraction.

Evaluate the expression using the order of operations.

24 ÷ 6 + 4²

• 12

• 2

• 20

7x + 2y + 5

What is the constant?

• 7x

• 5

• 7

• 2

What is a variable?

• A diagram showing how a composite number breaks down into its prime factors.

• A symbol used to represent a quantity that can change

• The number that is repeatedly multiplied

• A number that can be written using exponents

A term without a variable

• constant

• coefficient

• unit rate

• quotient

Evaluate expression if a=3 and b=4

4b-5a

• 2

• 1

• -8

• 8

Evaluate expression if a=3 and b=4

18 ÷ 2a

• 3

• 2.25

• 27

• 9

Evaluate Expressions a=3 b=4

7a + 8b x 2

• 110

• 100

• 80

• 85