Show and explain how to solve the following problem using the standard subtraction algorithm:

425 - 158

You can do this just the same way I did in the videos (that's why I made the videos--so you would have some examples to follow). The point of this is for you to get practice in being slow and careful and using place value language a lot.

You should be using the SMART notebook and Jing to record these.  If you need more time, you may make 2 separate videos since Jing has a 5 minute limit on the recording time.

(Either upload the .swf file into the dropbox, or save the video to screencast.com and paste the urls into a Word document, and upload to the dropbox)