Ed arranged some tiles in different arrays. one array has 3 rows with 6 tiles in each row. the other array has 2 rows with 9 tiles in each row. ed says that he can use the commutative property to show that the arrays both have 18 tiles. is he correct? explain

The commutative property lets you swap the order of operands. It would let Ed write

... 3×6 = 6×3

or

... 2×9 = 9×2

I don't see how this shows both arrays have 18 tiles. I would say Ed is not correct.

On the other hand, Ed could use the associative property to show that ...

... 3×(3×2) = (3×3)×2

which is to say

... 3×6 = 9×2

This seems to be what Ed is trying to show.

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.