Introduction to Expressions

An Algebraic Expression has 

• variables, numbers and operations

• numbers

• operations and number

A coefficient is the number next to the variable.

• You multiply the coefficient times the variable

• You add the coefficient and the variable

• You subtract the variable from the coefficient

What are the variables in 3x + y

• 3x

• x,y

• x

• y

A mathematical phrase that uses variables, numerals, and operation symbols.

• Algebra

• An equation

• An algebraic expression

• Something very scary 

• -y

• 1

• 10

• There are no constants in the expression.

• 2b

• b

• 6

• a

How many terms are in the expression below?

• 2

• 4

• 3

• 1

___ are the parts of an algebraic expression that are separated by operations.

• Variable

• Constant

• Coefficent

• Terms

A ___ is a number that is multiplied by the variable in an algebraic expression.

• Variable

• Constant

• Coefficient

• Term

What are the steps to solve the following expression?

50 − 16 ÷ 2 x (12 + 4)

• parenthesis

  multiplication

  subtraction

  division

• parenthesis

  division

  multiplication

  subtraction

• parenthesis

  multiplication

  division

  subtraction

• parenthesis

  subtraction

  multiplication

  division