Math

Order of operations.

Definition

The standard sequence for evaluating mathematical expressions: Parentheses first, then Exponents, then Multiplication and Division (left to right), then Addition and Subtraction (left to right).

Examples

Real-world.

  • 1 2 + 3 × 4 = 14 (multiply before adding)
  • 2 (2 + 3) × 4 = 20 (parentheses first)
  • 3 6 ÷ 2(1+2) requires careful attention to grouping
Key Fact

PEMDAS: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction

Related terms

Tangled up with.

Evaluating expressions → Variables and expressions → Integer operations →
Studied in

2 units use this concept.

Algebra 1 Foundations of Algebra → Pre-Algebra Whole Numbers and Integers →