the associative property of addition means that changing the grouping of the addends doesn't affect the sum
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Changing the grouping of the factors. The product stays the same.
The property states that for all real numbers a, b, and c, their product is always the same, regardless of their grouping: (a . b) . c = a . (b . c) Example: (6 . 7) . 8 = 6 . (7 . 8) The associative property also applies to complex numbers. Also, as a consequence of the associative property, (a . b) . c and a . (b . c) can both be written as a . b . c without ambiguity.
there is not division for the associative property
the associative property of addition means that changing the grouping of the addends doesn't affect the sum
its like a fatality
What are the "following?"
(a+b)+c = a+ (b+c).
The associative property, for example a + b + c = a + c + b
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In general, the associative property states that "a · (b · c) = (a · b) · c" for some operation "·". In other words, if an operation is associative, the order in which multiple calculations involving it are performed is irrelevant.
The associative property definition is this : you can group two numbers multiply them together then multiply that product by the other number. For example (3x3)x3=27 so basically all the associative property is about is grouping the numbers in different ways and making the problem faster and easier depending on what numbers you are multiplying. Hope that makes it easier 
Changing the grouping of the factors. The product stays the same.
The associative property of a binary operator denoted by ~ states that form any three numbers a, b and c, (a ~ b) ~ c = a ~ (b ~ c) and so we can write either as a ~ b ~ c without ambiguity. The associative property of means that you can change the grouping of the expression and still have the same result. Addition and multiplication of numbers are associative, subtraction and division are not.
Associative property
The property states that for all real numbers a, b, and c, their product is always the same, regardless of their grouping: (a . b) . c = a . (b . c) Example: (6 . 7) . 8 = 6 . (7 . 8) The associative property also applies to complex numbers. Also, as a consequence of the associative property, (a . b) . c and a . (b . c) can both be written as a . b . c without ambiguity.