Kenneth S. answered • 11/06/17
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Addition is COMMUTATIVE; addition of two quantities can be done in any order. a+b = b+a every time!
Addition of three quantities is associative: a + (b+c) = (a+b)+c. three quantities to be added can be combined in any order.
The word cumulative ought to have been commutative.
The mathematical operations called subtraction and division are NOT commutative.