Subtracting a number from itself

In this lesson we learn that subtracting a number from itself gives a difference of zero.

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

  • Click "Close Video"
  • Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

Lesson summary: Subtracting a number from itself

This was the final lesson in the unit Addition and subtraction.

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