# Adding and subtracting using partitioning

In this lesson, we will use partitioning to add and subtract large integers, both where regrouping is required and where it is not needed.

# 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.

# Lesson summary: Adding and subtracting using partitioning

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The next lesson in Problem solving with integer addition and subtraction is "Rounding to estimate"