This is a collection of our 2-digit addition without regrouping worksheets to supplement your lesson. It includes various activities such as vertical and horizontal addition, using a grid, coloring the answer, missing addend or sum, fill-in-the-blanks, adding three numbers, and more. *** View our Addition Worksheets Bundle to save and get all worksheets. The double-digit problems don't include carrying, so it's a perfect activity for mental math and other addition strategies. You can use thes