This is a practice for 1º E.S.O.
This is the tittle of the document with the activities:
“ADDITION AND SUBTRACTION PRACTICE”
To solve them you need to watch the videos.
This is the first video
http://www.yourteacher.com/free-video.php?id=1004
Now try to answers the questions for Addition.
This is the second video
http://www.yourteacher.com/free-video.php?id=1005
Now try the problems for subtraction