Help your 3rd grader understand the concept of multiplication through repeated addition with Lumos Learning’s engaging online practice. This interactive lesson aligns with the Common Core standard 3.OA.A.1 and provides step-by-step examples, guided practice, and instant feedback to strengthen foundational math skills. Designed by educators, this resource makes learning multiplication ... https://www.lumoslearning.com/llwp/lumos-guided-practice/math/grade-3/3.OA.A.1/multiplication-as-repeated-addition.html