Students practicing addition and subtractions of 2 digit numbers. 12 printables. Vertical and horizontal problems. Regrouping is required for some problems. 6 Addition Sheets (2 no regrouping, 2 regrouping, 2 mixed review). 6 subtraction sheets (2 no regrouping, 2 regrouping, 2 mixed review). There are 15-20 problems per page. Full page answer keys included. Questions/Materials include:✔️ 1 PDF Files (6 Addition worksheets, 6 Subtraction worksheets) ✔️ 15-20 Questions per page ✔️ Answer Range