Boolean LogicKey Facts
Order of Operations (Boolean Precedence)
Part of Boolean Expressions — GCSE Computer Science
This key facts covers Order of Operations (Boolean Precedence) within Boolean Expressions for GCSE Computer Science. Revise Boolean Expressions in Boolean Logic for GCSE Computer Science with 15 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 9 of 11 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 9 of 11
Practice
15 questions
Recall
22 flashcards
Order of Operations (Boolean Precedence)
Just like BIDMAS in maths, Boolean expressions have an order of operations:
| Priority | Operation | Symbol | Example |
|---|---|---|---|
| 1 (First) | Brackets/Parentheses | ( ) | Evaluate (A OR B) before anything else |
| 2 | NOT | ¬ or NOT | NOT(A) is evaluated before AND/OR |
| 3 | AND | ∧ or AND | A AND B before OR (like × before +) |
| 4 (Last) | OR | ∨ or OR | A OR B is evaluated last (like +) |
Example without brackets: NOT A AND B OR C
- Step 1: NOT A (NOT first)
- Step 2: NOT(A) AND B (AND second)
- Step 3: [NOT(A) AND B] OR C (OR last)