how do you figure out square roots of decimal numbers?
I just googled
"how to find square root of a number" and found this simple expanation,
http://math.arizona.edu/~kerl/doc/square-root.html
the first result came from a "homeschool" page, it appears their curriculum still includes this method.
http://www.homeschoolmath.net/teaching/square-root-algorithm.php