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# Unit 1 Vocabulary

### Value of a Variable lesson a - c

TermDefinition
Exponent Indicates the number of times the base is to be used as a factor.
Evaluate means to find its value.
Order of operation the rule that lets you know which operation to perform first
Evaluate Algebraic Expressions replace the variable with their values. Then find the value of the numerical expression using the order of operation.
algebraic expression sums and/or products of numbers and variables
variable symbols used to represent unknown numbers or values
term number, variable, or a product or quotient of numbers and variables
factor in multiplication, the quantities being multiplied
product the result of multiplying two or more quantities
Equivalent expressions expressions that represent the same number.
Additive Identity For any number a, the sum and a and 0 is a.
Multiplicative Identity For a number a, the product of a and 1 is a.
Multiplicative Property of Zero For any number a, the product of a and 0 is 0
Multiplicative Inverse (reciprocals For every number a/b, where a, b ≠ 0, there is exactly one number b/a such that the product of a/b and b/a is 1.
Commutative Property The order in which you add or multiply numbers does not change their sum or product.
Associative Property The way you group 3 or more number when adding or multiplying does not change their sum or product.
Distributive Property When you multiply a number by a group of numbers added together you get the same answer as when you do each multiplication separately
Like Terms terms that contain the same variables, with corresponding variables having the same power.
Simplest Form when an expression contains no like terms and parentheses.
Coefficient The numerical factor of a term.
Created by: MrsMWilliams