Provide systematic and scaffolded instruction to support your learners' mastery of subtraction. This substantial resource is meticulously crafted to deconstruct subtraction number operations into digestible pieces. The carefully structured Scope and Sequence ensures a step-by-step progression that builds on previously mastered skills and gradually increases in complexity. Featuring a baseline assessment planning tool, curriculum map, 13 leveled units with flashcards, worksheets, and end-of-unit assessments, along with visual anchor charts for regrouping, this resource has enough to last the whole school year! With over 170 worksheets, this resource is a must-have tool for effective and engaging subtraction instruction.