Math Lesson 7-11

Numbers the same distance from zero on the number line in opposite directions. Same numerals but opposite signs

A mathematical phrase that contains operations, numbers, and/or variables. It CANNOT have an equal sign

An expression that contains at least one variable (no equal sign)

To explain why something is correct or incorrect by giving logical reasons or evidence

A symbol (usually a letter) used to represent a quantity that can change

Another name for the opposite of a number

Mathematical statement that uses an equal sign to show that two expressions have the same value. MUST have an equal sign

The result of multiplication

An expression that contains only numbers and operations. It CANNOT have a variable (letter). It also has no equal sign

Uses multiplication over terms in parentheses that are added to get an equivalent expression

Uses multiplication over terms in parentheses that are subtracted to get an equivalent expression