I have made a check list/guide for students to use to help them remember the steps of adding and subtracting larger numbers.
When I printed this out to use with my students, I chose an example number and then modeled the drawings on the charts provided and then laminated the papers back to back to students to use as a reference.
**Please note that you will need to draw in the chips following the steps. I used the colors of the text for each step so students could follow along.