2nd Grade Math Worksheets Great to use as instant practice, these 2nd grade math worksheet pdfs help kids find the sum of 2-digit addends and apply the concept to solve word problems as well. Subtracting 1-Digit from 2-Digit Numbers | Regrouping Elevate skills to the next level as kids subtract a single-digit numeral from a 2-digit numeral, regrouping in the ones place.