These Christmas, Winter, and Valentine's Day math riddles are perfect for math centers, whole group graph instruction, and review. These math riddles are a perfect extra for your December, January, and February math instruction. These riddles are easy to use, self guided instruction, independent instruction and the perfect touch of holiday fun for winter months!60+ pages of Riddles!Skills Included!:•Double digit addition (no regrouping) •Double digit addition (regrouping) • Double digit subtract