Write the expanded notation for the following numbers.

$744=$_____

Write the expanded notation for the following number.

$904=$_____

Write the expanded notation for the following number.

$859=$_____

Write the expanded notation for the following numbers.

$590=$_____

Write the standard notation for the following.

$100+60+7$

Write the standard notation for the following.

$600+8$ = 

Write the standard notation for $900+20+6$.

$500+30$ $=$