Teaching the standard algorithm for 3-digit addition can feel simple… until regrouping shows up and half the class freezes. I created this step-by-step visual because my students needed something clear, predictable, and consistent to reference — without me reteaching it every time. This resource breaks down 3-digit by 3-digit addition with regrouping into manageable steps that students can actually follow independently. The anchor chart version is perfect for your math wall, and the student vers