Applying a range of strategies to mentally calculate addition
In this lesson, we will use mental strategies such as partitioning and adjustment to multiples of ten to add a range of two digit numbers together. .
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.
Worksheet
These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.
This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.
Unit quizzes are being retired in August 2023
Why we're removing unit quizzes from the website >Apply a Range of Strategies to Mentally Calculate Addition
Are you a whizz at addition? Take the quiz to test your knowledge.
This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.
Unit quizzes are being retired in August 2023
Why we're removing unit quizzes from the website >Apply a Range of Strategies to Mentally Calculate Addition
Are you a whizz at addition? Take the quiz to test your knowledge.
Lesson summary: Applying a range of strategies to mentally calculate addition
It looks like you have not completed the quiz.
To share your results with your teacher please complete the quiz.
Time to move!
Did you know that exercise helps your concentration and ability to learn?
For 5 mins...
Move around:
Jog
On the spot:
Chair yoga