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PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. BEDMAS: Brackets, Exponents, Division, Multiplication, Addition, Subtraction. BODMAS: Brackets, Order (or "Of"), Division, Multiplication, Addition, Subtraction. GEMDAS: Grouping symbols (brackets: (){}), Exponents, Multiplication, Division, Addition, Subtraction. MDAS: Multiplication and Division (same precedence), Addition and Subtraction (same precedence). MDAS is a subset of PEMDAS. Important Notes:1. Multiplication/Division vs. Addition/Subtraction: Always perform multiplication and division *before* addition and subtraction. 2. Left-to-Right Rule: Operators with the same precedence (e.g., + and -, or * and /) must be evaluated from left to right. (责任编辑：) |