To work on your student's 4 digit addition and subtraction skills with regrouping, your student will solve the addition or subtraction problems and then use the key at the top to color the part of that picture the corresponding color. There are 2 pictures for non regrouping addition, 2 pictures for regrouping addition, 2 pictures for non regrouping subtraction, and 2 for regrouping subtraction. Each pair is the same except one is with black numbers and the other uses the Montessori colors for Place Value. These can be used with Pre-K to 6th grade aged children as a center, independent work for homeschooling, or as a one on one activity with a teacher/parent.

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