This math topic focuses on fraction subtraction, particularly identifying the lowest common denominator when subtracting mixed fractions with one denominator needing modification. It is a fundamental unit within a larger framework of mixed fraction addition and subtraction skills. Each question requires students to choose the correct lowest common denominator from multiple choices for subtracting two given fractions. This skill is essential for effectively simplifying differences between fractions and represents an introductory level of understanding in fraction manipulation.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.