This math topic focuses on practicing addition of two-digit and one-digit whole numbers arranged in columns. It includes various exercises where learners add a two-digit number to a one-digit number, aiming to find the correct sum from multiple choices. Each question presents a numerical addition problem, and students are required to select the correct answer from several options. The topic is a part of a broader unit on addition and subtraction of integers involving one and two digits, designed to build foundational arithmetic skills.