Basic Prealgebra With Variables

What are the variables in the following expression?

• 3, 4, 1 and 7

• z, x and y

• + and -

• 15

What are variables in math?

• Letters

• Numbers

• Expressions

A variable represents what is ______________. 

• the answer

• the operation

• the difference

• unknown 

A variable is . . .

• an awesome number

• a number represented by a letter

• an infinite number

• a number multiplied by another number

What is the definition of a variable?

• A letter or symbol that represents an unknown quantity

• The little number or letter used to raise to a power

• The number in front of a variable

• The number with no variable

Match the following

• Matching terms that can be combied

• Simplify

• The number multiplied by the variable

• Like Terms

• A letter that means an unknown number

• Constant

• To make an expression as small as possible by combining like terms

• Coefficient

• A term without a variable

• Variable

a symbol for an unknown value; usually a letter (such as a, x, or y) is the symbol used

• constant

• variable

• coefficient

• term

Match the following vocabulary words to it's correct definition.

• Coefficient

• A number by itself with no variable attached.

• Constant

• The number in front of the variable.

• Expression

• A number, a variable, or both.

• Variable

• A combination of terms.

• Term

• A placeholder, usually a letter, to represent an unknown number.

Tags

6.13

What variable typically represents the domain?

• x

• y

5p + 4h - 2
Which are the variables? 

• 5p, 4h, 2

• 2

• p, h

• 5, 4