Uploaded March 2009 | Updated September 2026, 1 day ago
Another Math trick, followed by an explanation of why it works. Squaring a number in the 50's or near to 50 can be done easily in your head in seconds.
Another Math trick, followed by an explanation of why it works. Squaring a number in the 50's or near to 50 can be done easily in your head in seconds.
