vocab Flashcards
Base
the number used as a factor
Exponent
tells how many times a base is used as a factor
Powers
numbers expressed using exponents
Perfect squares
the squares of whole numbers
Numerical expression
a combination of numbers and operations
Order of operations
shows which operation to perform first so that everyone finds the same value for an expression
Algebra
a language of symbols including variables
Variable
a symbol, usually a letter, used to represent a number
Algebraic expression
contains at least one variable and at least one operation
Evaluate
find the value of
Defining the variable
to choose a variable and decide what it represents
Properties
statements that are true for any number
Commutative properties
The order in which two numbers are added or multiplied does not change their sum or product.
Associative properties
The way in which three numbers are grouped when they are added or multiplies does not change their sum or product.
Identity properties
The sum of an addend and 0 is the addend. The product of a factor and 1 is the factor
