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By Mr. Chancellor. Variables and Expressions. A variable is used to represent an unknown number or value. An algebraic expression combines numbers and variables with arithmetic operations. Variables and Expressions. Sum Plus More than Add In all Increase by total.

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variables and expressions

A variable is used to represent an unknown number or value.

An algebraic expression combines numbers and variables with arithmetic operations.

Variables and Expressions
variables and expressions1

Sum

Plus

More than

Add

In all

Increase by

total

Variables and Expressions

+

variables and expressions2

Difference

Less than

Subtract

Minus

Decrease by

Variables and Expressions

-

variables and expressions3

Times

multiply

Each

Product

Of

X

Variables and Expressions
  • Quotient
  • Divided
variables and expressions6

Write an algebraic expression for:

“Eight less than the sum of the numbers m and n”

Variables and Expressions
variables and expressions7

Tips!!!

Use parenthesis or raised “ .” for multiplying not “ X .“

Don’t forget the Order of Operations (PEMDAS)

Variables and Expressions