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BIDMAS Order of Operations Flashcards
GCSE Mathematics (Edexcel) 1MA1
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BIDMAS
An acronym for the order of operations: Brackets, Indices, Division, Multiplication, Addition, Subtraction.
Brackets in BIDMAS
Always calculate expressions inside brackets first.
Indices in BIDMAS
Evaluate powers and roots (e.g., squares, cubes, square roots) after brackets.
Division and Multiplication in BIDMAS
Perform division and multiplication from left to right, after brackets and indices.
Addition and Subtraction in BIDMAS
Perform addition and subtraction from left to right, after division and multiplication.
Order of Division and Multiplication
Division and multiplication are of equal priority; work from left to right.
Order of Addition and Subtraction
Addition and subtraction are of equal priority; work from left to right.
Why BIDMAS is important
It ensures that calculations are performed in a consistent and correct order.
Common mistake in BIDMAS
A common mistake is performing addition before multiplication. Always follow the correct order.
Example of BIDMAS
For 3 + 2 × 4, calculate 2 × 4 first (8), then add 3 to get 11.
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