The document provides examples of adding 2-digit numbers with and without regrouping. It includes step-by-step additions such as 12 + 58 = 107, 52 + 28 = 108, and 65 + 16 = 118. It then demonstrates adding 3 two-digit numbers with regrouping, such as 15 + 18 + 53 = 186, 13 + 32 + 48 = 139, and 13 + 42 + 27 = 128. The document encourages the learner and praises their work.