Answer
The shortage of nurses will be $1,010,000$.
Work Step by Step
In the year 2020 it is predicted that we will need $2,820,000$ nurses in the United States.
It is also predicted only $1,810,000$ nurses will be available.
$2,820,000 - 1,810,000 = 1,010,000$
The shortage of nurses will be $1,010,000$.