(1.2) Subtraction Without Borrowing, Why It Works
Channel: MathVentures
Date: 2009-07-28

Here is a simple example, employing a small number, that demonstrates why this Subtraction Without Borrowing method works.

Note: For those who cannot access YouTube, this video is available at TeacherTube -- http://www.teachertube.com/members/viewVideo.php?video_id=144290&title=_1_2__Subtraction_Without_Borrowing__Why_It_Works