Adding One-Digit and Two-Digit Numbers in Columns Without Regrouping

This addition worksheets is all about add in columns 2 digit plus 1 digit no regrouping, such as 12+3 or 10+6. Grade one students will quickly learn this skill as they have ample opportunities to practice with strategies they have already learned. This worksheet has no need for regrouping, and the numbers are in columns to make it easier for students, so they can become comfortable with adding double-digit to single-digit numbers,  and familiar with the process before moving on to a more challenging skill. Grade-one students will quickly learn how to add double-digit to single-digit numbers with ease.