Adding and Subtracting Square Roots

I am looking for practice on Adding and Subtracting Square Roots.  It is part of one of our state standards for Algebra 1 in Georgia (MGSE9-12.N.RN.2).  I found videos on each in the "old" Algebra content.  However, I have not found practice.  Has it been created?  If not, it would be a great addition to the Algebra 1 content.