Find an unknown addend
In this lesson, we will be finding an unknown addend when the sum is changed. Resources provided by NCETM (CC BY-NC-SA: https://creativecommons.org/licenses/by-nc-sa/4.0)
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: Find an unknown addend
Time to move!
Did you know that exercise helps your concentration and ability to learn?
For 5 mins...
Move around:
Walk
On the spot:
Dance