Question

if you know that 7 x 8 =56 , how can you use the Commutative (order) Property of Multiplication to find the product of 8 x 7 ?

Answer 1

You can simply group the numbers differently, and the Commutative Property will hold that equality.
8(7) = 56 is the same as 7(8) = 56.
All you did was "order" them differently; the values themselves do not change.