This math topic focuses on comparing fractions by finding the lowest common denominator. The problems are structured to help students determine which denominator is suitable to compare two given fractions. Each question is presented with a set of fractions and multiple choice answers for possible common denominators. By solving these problems, students enhance their understanding of fractions and develop their skills in identifying the lowest common denominator necessary for comparison. This skill is essential for performing operations with fractions and understanding their relative sizes.