| A | B |
| variable | It is a symbol, usually a letter, that represents one or more numbers. |
| algebraic expression | It is a mathematical phrase that |
| equation | It is a mathematical sentence that uses an equal sign. |
| open sentence | An equation that contains one or more variables |
| simplify | To do this to a numerical expression, you replace it with its simplest name. |
| power | This has two parts, a base and an exponent |
| exponent | This tells homw times a number is used as a factor. |
| base | Is the number that is used as the factor. |
| evaluate | This is done to an algebraic expression by substituing a given number for each variable. |