This for subtraction with regrouping! Such a fantastic idea. Take a dry eraser marker, plastic sleeve and insert the long division paper and you have a mini white board for you child to practice on:) write and wipe.write and wipe
Keep all of your cleaning supplies in an easily accessable space with Thomasville Cabinetry's Utility Cabinet. I think this idea could be easily modified on a standard kitchen cabinet with a little ingenuity.