TIP: Place in a dry-erase pocket.

Good for modeling or when working with students struggling with adding/subtracting with expanded form. I made this as a tool for a student who struggled with setting-up the problem accurately & neatly. The colors, blank spaces/lines, and aids for TH/H/T/O really helped him get used to setting up the problem.

Includes organizers for 3-digit and 4-digit operations.