4-Digit Addition Worksheets | Grades 2–4 | Regrouping & No Regrouping | 20 PagesHelp your students master 4-digit addition with this set of 20 printable worksheets, perfect for 2nd, 3rd, and 4th grade. This resource includes both regrouping and no-regrouping problems, making it ideal for differentiation, review, homework, test prep, and math centers. Each page features clean layouts, kid-friendly illustrations, and plenty of space for students to show their work. Just Print & Go — no prep r