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MeBestArithmetic Laws — Quick ReferenceCommutativea + b = b + a · a × b = b × aabbaAssociative(a + b) + c = a + (b + c)Group left →abcGroup right → a + (b + c)Distributivea × (b + c) = a×b + a×ca×ba×cabcIdentity · Zero · InverseIdentity: a + 0 = a · a × 1 = aZero: a × 0 = 0Additive inverse: a + (−a) = 0Multiplicative inverse: a × (1/a) = 1 (a≠0)Order of OperationsPEMDAS / BODMASParenthesesExponents× / ÷+ / −Example:3 + 2 × (4 + 1) = 3 + 2 × 5 = 3 + 10 = 13MeBest Cheatsheet — Arithmetic Laws (SVG)