Expert: Abe Mantell - 5/24/2009

Question
I'm attempting to tutor a seventh grade student in finding the square root of large numbers using the Long Algebraic Method. I've never seen this method before and the book isn't offering useful information. Factoring and guess/checking isn't allowed.

Example: Calculate the square roof of 7203856.

Thank you for your help!
Jamie

Answer
Hello Jamie,

Here are some links that should be helpful:
http://math.arizona.edu/~kerl/doc/square-root.html
http://www.homeschoolmath.net/teaching/square-root-algorithm.php (scroll down a bit)
http://www.itl.nist.gov/div897/sqg/dads/HTML/squareRoot.html
http://imo.typepad.com/imo/2008/07/how-do-i-manual.html

Let me know if you need any more help.

Enjoy!  :-)

Abe