› christmas-math-worksheets-2/3/4-gradeChristmas & Winter Math Worksheets for 2nd, 3rd and 4th ... Christmas Math Worksheets – Addition and First-Then Logic. Our Christmas Math Worksheets have been incredibly popular this month, so we decided to squeeze two more in before winter break arrives! The first math worksheet is addition up to 20 with no regrouping, great for first or second graders. The second math worksheet is a combination of addition, multiplication and division with math problems in parenthesis that requires students to use ‘First – Then’ logic to solve the equations.