Give your first graders meaningful, no-prep practice with addition and subtraction within 20. This resource is designed for busy teachers who need clean, practical, easy-to-use math pages for fact fluency, strategy practice, word problems, math centers, quick checks, and review.Students will practice addition and subtraction facts, missing numbers, comparing expressions, true/false equations, number lines, ten frames, make 10, part-part-whole models, fact families, and word problems within 20.WH