Order of Operations (PEMDAS/BODMAS) Step-by-Step
The order of operations guarantees there is only ONE correct mathematical answer to any multi-operator expression. Follow the strict hierarchical precedence: Parentheses, Exponents, Multiplication & Division (Left to Right), Addition & Subtraction (Left to Right).
๐ง Core Mental Strategies & Shortcuts
1๏ธโฃ Parentheses First: ( )
Always evaluate expressions inside parentheses before anything else: 3 ร (4 + 5) = 3 ร 9 = 27.
2๏ธโฃ Exponents & Powers: xยฒ
Calculate powers next: 2 + 3ยฒ = 2 + 9 = 11.
3๏ธโฃ Multiply & Divide from Left to Right
Multiplication does NOT always come before division! Evaluate whichever appears first from left to right: 20 รท 4 ร 2 = 5 ร 2 = 10.
โ Frequently Asked Questions
What is the difference between PEMDAS and BODMAS?
They are identical rules with regional naming: PEMDAS is used in the US (Parentheses, Exponents), BODMAS is used in the UK/India/Australia (Brackets, Orders).
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