- a mathematical phrase that combines numbers, operation signs and variables
- algebraic expression
- operations that undo each other, such as addition and subtraction or multiplication and division
- inverse operation
- the highest number that can be divided evenly into two or more numbers
- greatest common factor
- in an equation with two variables, the variable whose value affects the dependent variable: for example, "x" in y=x+1
- independent variable
- in an equation with two variables, the variable whose value affects the independent variable: for example "y" in y=x+1
- dependent variable
- a set of rules that determines the correct sequence for evaluating expressions
- order of operations
- a letter or symbol used to represent a number
- variable
- a number that tells how many times a given base is used as a factor
- exponent
- a statement that two quantities are equal: contains an equal sign
- equation
- a mathematical statement that compares two expressions and includes an inequality symbol such as < or >
- inequality
- the numerical factor of a term containing a variable
- coefficient
- the repeated factor in an expression with an exponent
- base
- a number, variable, product or quotient in an expression
- term
- a combination of numbers and operation signs
- expression
- a phrase that contains numbers and operations
- numerical expression

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