Boost your students’ number sense and equation-solving skills with this Back to School Mixed Addition and Subtraction Within 20 Practice Pack! This printable math resource is designed to strengthen early math fluency by combining three essential skill areas: solving addition and subtraction facts within 20, identifying missing numbers, and balancing equations—all in one engaging format. These math review worksheets are perfect for daily warm-ups, math centers, quizzes, or back-to-school assess