This set of three Grade 2 Kumon workbooks includes the following complete workbooks:Addition covering the following topics:-Horizontal addition review-Vertical form addition-Two-digit plus two-digit addition to 198-Early three & four-digit addition-Addition of three two-digit numbers-Commutative property of addition-Patterns & sequencingWord Problems covering the following topics:-Addition and subtraction-Length-Weight-Mixed calculations-Tables and graphsSubtraction covering the following topics:-Horizontal subtraction review-Vertical form subtraction-Regrouping (borrowing)-Three-digit minus two-digit subtraction-Early three & four-digit subtraction-Addition & subtraction of three two-digit numbers-Patterns & sequencingOur Calculation Workbooks follow the Kumon Method, a proven learning system that helps children succeed and excel in math. Kumon Workbooks gradually introduce new topics in a logical progression and always include plenty of practice. As a result, children master one skill at a time and move forward without anxiety or frustration.