Answer
$60000+6000+40+9$
Work Step by Step
To write in expanded form write an addition expression where each addend is the value for each digit, using the digit and its place value.
$\ \ ten-thousands\ \ hundreds\ \ ones$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \overset\downarrow6\ \ \ \ \underset\uparrow6\ \ \ \ \overset\downarrow0\ \ \ \ \underset\uparrow4\ \ \ \ \overset\downarrow9$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ thousands\ \ \ \ \ \ tens$
