What is a cummutative property of multiplication?

Answer 1

It means to commute or move numbers or variables and place them in different places when multiplying to make it easier. For example: 5 x 6 x 2 = ? To make it easier, you can commute the numbers, or, move them around to find a group if numbers you know the sum of, like, 5 x 2. Then, find the sum of that, and multiply that sum to the remaining digit. 5 x 2 = 10. 10 x 6 = 60

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Technically, that is using the commutative AND associative property.

The commutative property of multiplication states that for any two numbers, x and y,

x*y = y*x.