Addition Example:
When we change the groupings of addends, the sum does not change:
(2 + 5) + 4 = 11 or 2 + (5 + 4) = 11
(9 + 3) + 4 = 16 or 9 + (3 + 4) = 16
Just remember that when the grouping of addends changes, the sum remains the same.
Multiplication Example
When we change the groupings of factors, the product does not change:
(3 x 2) x 4 = 24 or 3 x (2 x 4) = 24.
Just remember that when the grouping of factors changes, the product remains the same.
Think Grouping! Changing the grouping of addends does not change the sum, changing the groupings of factors, does not change the product.

