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Associative property of addition
The way in which 3 numbers are grouped when they are
added doesn't change the sum

e
xample ( 1 + 2 )+ 4 = 2 + ( 1 + 4 )
Associative property - works the same way for
multiplication

The way in which three numbers are grouped when they
are multiplied doesn't change the product.

Example    2 (4 x 5) = 4 (5 x 2)