This document defines key vocabulary terms used in mathematics. An equation is a mathematical sequence where two quantities have the same value, such as 2x + 76 = 100. An expression is a mathematical combination of numbers, variables, and operations, like 3x2 + (3 x 2) – 8 (4 ÷2).

1. Chapter 1
VOCABULARY

2. Equation
 A mathematical sequence that two quantities have
the same value
 Examples:
2x + 76 = 100
54 + 20 = 74

3. Expression
 A mathematical combination of numbers, variables,
and operations
 Example:
3x² + (3 x 2) – 8 (4 ÷2)