1. 1.1 Lesson – Evaluating Algebraic Expressions
Essential Question p. 2
How can you write and evaluate an expression that represents a real-life problem?

2. A numerical expression contains only numbers and operations.
An algebraic expression contains numbers, operations, and one or more variables. Here are some examples.
Numerical Expression:
· 3
Algebraic Expression:
45 ÷ p − q

3. To evaluate an algebraic expression, substitute a number for each variable. Then use the order of operations to find the value of the numerical expression.