This product contains a variety of resources for subtracting 3-digit numbers with regrouping. There work mats that contain step by step models. There are leveled worksheets great for independent work, homework, enrichment, centers, etc. There are answer keys with self-assessment forms to help students reflect on their learning. There are also a variety of self-assessment/reflection forms and exit tickets to help students become reflective thinkers about their learning! There are subtraction cards with answer keys that are fun to use for centers or group work! My kids love this product and it really helped them understand the steps for subtracting 3-digit numbers with regrouping!