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# Math topic 2

### Variables , Expressions , and Properties

TermDefinition
Order of operations A set of rules mathematics use to determine the order in which operations are performed.
Evaluate To find the value of an expression
Identify property of multiplication The product of a number and is that number
Identify property of addition Adding zero to a number ones not change the number
Substitution To replace variable with a number
Distributive property Multipying a sum (or difference) by a number gives the same result as multiplying each number in the sum ( or difference) by the number and adding ( or subtracting) the products.
Associative property of multiplication the way numbers are grouped does not affect the product
Variable A quantity that can or vary, often represented with a letter
Input/ output table A table of related values
Commutative property of multiplication The order in which numbers are multiplied does not change the product of the numbers
Commutative property of addition The order in which numbers are added does not change the sum of the number
Coefficient The number that is multiplied by a variable in an algebraic expression Example: for 6x +5 , the coefficient is 6
Associative property of addition The way numbers are grouped does not affect the sum
Algebraic expression A mathematicsl phrase that has at least one variable and one operation
Created by: SFABGRADE6-14