This is a great way to assess student learning at the conclusion of the lesson. This product is designed to be used to assess subtraction facts to 12. It includes subtraction facts using part part whole mats, finding the missing number, and related facts. This is meant to be a quick assessment (less than 5 minutes) as we transition from math I check all the students. They are also great to use for reteaching with the ones that did not get the concept.