This math topic is centered on practicing addition skills involving a 2-digit number and a 1-digit number. Each question presents a basic addition problem asking to sum a two-digit integer with a one-digit integer. Students are provided with multiple choice answers for each problem to select from. This set of exercises is part of a broader topic covering both addition and subtraction of 1 and 2-digit integers, aiming to strengthen basic arithmetic proficiency and integer manipulation skills.