*** Before you purchase this, go look at my Math mats bundle. This mat is in the bundle, plus over 20 more mats!
http://www.teacherspayteachers.com/Product/Math-Mats-Bundle-K-2-over-20-Math-mats
I use these mats to help my students keep their digits lined up while doing addition and subtraction. It is a GREAT tool to help them organize their operations and they can see what place value each digit is in. The boxes at the top are a reminder for the students to regroup if possible. I know it'