This math topic focuses on practicing the addition of whole numbers where a two-digit number is added to a one-digit number, organized in column format. It covers various examples, helping to strengthen and confirm understanding of basic addition principles through multiple choice questions. This is part of a larger unit on the addition and subtraction of integers involving one and two digits. Each question presents a mathematical expression in a structured format, and students are to select the correct result from a list of options, helping them to confirm their ability to perform basic addition accurately.