| A | B |
| term | a number or product of a number and variable |
| constant | a term with no variable |
| like terms | terms with identical variables and exponents |
| coefficient | a number that multiplies a variable |
| equation | math sentence with an = sign |
| open sentence | an equation with 1 or more variables |
| solution of a sentence | a value that makes an equation true |
| variable | a letter used to represent an unknown number |
| sum | the answer to an addition problem |
| difference | the answer to a subtraction problem |
| product | the answer to a multiplication problem |
| quotient | the answer to a division problem |