| a mathematical phrase that contains at least one variable | algebraic expression |
| an amount that does not change | constant |
| the answer to a subtraction problem | difference |
| a mathematical sentence that says that two quantities are equal | equation |
| mathematical operations that cancel each other. (opposites) | inverse operations |
| part of a sentence or a short mathematical statement | phrase |
| the result of a multiplication problem | product |
| an amount (sometimes contained within parentheses) | quantity |
| the result of a division problem | quotient |
| a value for a variable that makes a statement true | solution |
| replace a variable with a possible solution | substitute |
| the result of an addition problem | sum |
| an amount that can change or is unknown. (often displayed as a letter) | variable |