How does understanding place value you multiply, tens, hundreds, and thousands?

They help so u can understand how u multiply them.

It helps you understand because you will be able to multiple Better with all the zeros behind the number and understanding

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.