Order of Operations (Boolean Precedence)
Part of Boolean Expressions · GCSE GCSE Computer Science revision
This key facts covers Order of Operations (Boolean Precedence) within Boolean Expressions for GCSE Computer Science. Revise Boolean Expressions in 3.4 Computer Systems for GCSE Computer Science with 17 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 9 of 12 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 12
Practice
17 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)
Keep building this topic
Read this section alongside the surrounding pages in Boolean Expressions. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Boolean Expressions
Which Boolean operator produces an output of 1 only when BOTH inputs are 1?
State De Morgan's first law and give an example to illustrate it.
Quick Recall Flashcards
17 questions on Boolean Expressions — practise free
Instant marking, adaptive difficulty, and 22 spaced repetition flashcards. Free until your GCSEs.
Try PrepWise Free