Build first grade addition fluency with this set of 50 printable worksheets focused on sums within 20 without regrouping. Each page includes 30 vertical addition problems in a clean box format that helps students line up digits, stay organized, and write answers neatly.This resource is a strong fit for first grade math practice, independent work, small groups, homework, math centers, morning work, sub plans, and extra review.What is included:- 50 black-and-white worksheet pages- 50 matching answ