This color-by-number is great for your students to practice or review two-digit addition and subtraction with and without regrouping and unveil the mystery pictures. Perfect for morning work, math centers, early finishers, independent practice, assessment, or review. INCLUDED:Each worksheet has 20 problems.12 printable worksheets - No regrouping - Fall & Winter36 printable worksheets - With regrouping - Spring, Summer, Fall, and Winter48 answer keysPREP:Simply print these NO PREP worksheets and