Expressions & Equations Vocabulary

A symbol used for a number we don't know yet. It is usually a letter like x or y.

A mathematical phrase that can contain ordinary numbers, variables and operations.

The operation that reverses the effect of another operation.

A number used to multiply a variable.

A mathematical phrase involving only numbers and one or more operational symbols.

Multiply a # by a group of numbers added is the same as doing each multiplication separately.

Terms that have the same variables and powers.