Created for elementary age students, 4 pages of two-digit addition and subtraction problems (2 pages of addition and 2 pages of subtraction) set up in a grid with boxes for "regrouping"/ "carrying"/ "borrowing." The grid format helps students keep their columns lined up, and the boxes will aid them in remembering to "carry" or "borrow" tens. 2/2021: This product has been updated to include answer keys, a cleaner design, and a link to the Google Slides version of the worksheets!