Answer and Explanation:
Given : Number 3.441
To find : How does writing number in expanded form show why the same digit can have different values?
Solution :
Writing number in expanded form,

or

The same digit 4 have different values because their place values are different as tenths and hundredths so their face value change.
As tenth place 4 is 0.4 and hundredths place 4 is 0.04.