Math Puzzles Double Digit Addition and Subtraction without ,with Regrouping Mystery Pictures Winter Activities - a fun way to supercharge your students' addition and subtraction skills! Your students are sure to love Winter - themed Cut and Paste Worksheets. Perfect for 1st - 3rd grade, these worksheets can be used for independent practice, math centers, small groups, early finishers. back to school, or anytime during the year. This bundle includes: - Winter 2-Digit Addition and Subtraction wi