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Commutative law and associative law - simply explained: https://www.matheretter.de/m/gru/komm... Calculation rules Commutative law: a + b = b + a a * b = b * a Associative law: a + b + c = (a + b) + c = a + (b + c) a * b * c = (a * b) * c = a * (b * c) ++ Become a customer now: https://www.matheretter.de/ Mathematics videos for pupils and students. To prepare for tests and math assignments. Learn math online quickly and easily! This video may be exchanged. Use in class permitted. # © Matherettter