| A | B |
|---|
| variable | a symbol that represents a number |
| variable expression | an expression that contains a variable |
| evaluate | to substitute a number for a variable |
| value of a variable | the number that you substitute for the variable |
| comparison property | For any two numbers, a and b, exactly on of the following is true: a > b; a < b; a = b |
| inequality symbols | < and > |
| commutative property of addition | changing the order of the terms does not change the sum |
| associative property of addition | changing the grouping of the terms does not change the sum |
| additive identity | zero |
| identity property of addition | the sum of any number and zero is the original number |
| commutative property of multiplication | changing the order of the factors does not change the product |
| associative property of multiplication | changing the grouping of the factors does not change the product |
| multiplicative identity | one |
| identity property of multiplication | the product of any number and 1 is the original number |
| multiplication property of zero | the product of any number and zero is zero |
| exponent | the number that indicates how many times the base is multiplied by itself |
| base number | in exponential form, the number that is being raised to a "power" |
| order of operations | parentheses, exponents, multiply and divide left to right, add and subtract lieft to right |
