Celebrate the holiday season with these fun and engaging Christmas-themed math worksheets! This 40-page printable pack helps students practice addition and subtraction within 20 using number lines, allowing learners to visually understand how numbers increase and decrease. Perfect for Kindergarten and 1st Gand classrooms during December math centers, morning work, independent practice, or homework. The activities are no-prep — simply print and go! WHAT’S INCLUDED:Addition on a number line (0–20