This math topic focuses on the skill of finding the lowest common denominator for the purpose of adding fractions. Each question presents a pair of fractions for which students need to identify the appropriate lowest common denominator from multiple-choice answers. The skill practiced is essential for fraction addition and involves changing the denominators of the fractions to facilitate their combination. This is part of a broader unit on fraction addition and subtraction with mixed practice, designed to help students master the basics of working with fractions.

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