This math topic focuses on the skill of determining missing numerators to complete equivalent fractions, aimed at enhancing students' understanding of equivalence within fractions. The problems require identifying and writing the appropriate numerator to ensure the two fractions shown are equivalent, a foundational concept in learning to compare and simplify fractions. This is part of introductory lessons on fraction comparison. Each question is displayed with graphics representing the fractions, which likely includes a variable representing the unknown numerator. This skill helps solidify conceptual understanding and mathematical reasoning about fractions.