circle the name of the greastest place-value position in which 5,398 and 5,379 are different.

is it ones, tens, hundreds, or thousands?

thous - hundreds - tens - ones

5 3 9 8

5 3 7 9

Thousands and hundreds are the same, so you can eliminate 1/2 of the numbers. Now, take a look at the ones and tens columns. . .

What are the largest numbers? (9's)

Which 9 holds the largest place value? i.e. 9 of 10s? OR 9 of 1s?

Confirm?? 9 of 10s = 90; 9 of 1's = 9

Did you confirm? That should give you your answer and how you got there! JJ