Expressions and Equations Vocabulary

A symbol used to represent a quantity that can change.

The number that is multiplied by the variable in an algebraic expression.

Operations that undo each other: addition & subtraction or multiplication & division.

A mathematical sentence that shows that two expressions are equivalent.

The value for the variable that makes the equation true.

a(b + c) = ab + ac and a(b - c) = ab - ac

Any number that can be expressed as a ratio of two integers.

A number that is multiplied by another number to get a product.

Two or more numbers can be added or multiplied in any order without changing the result.

An expression that contains at least one variable.