Column Method

Worksheet Description

This worksheet is designed for students to practice finding both the common multiples and the Least Common Multiple (LCM) of pairs of numbers. Each question lists a pair of numbers and provides space for students to list the common multiples and then to identify the LCM. The first problem is partially completed as an example, showing a list of common multiples for the numbers 15 and 20, and the LCM is indicated. This setup gives students a clear format to follow for their calculations and aids in understanding the difference between common multiples and the least common one.

The worksheet’s purpose is to teach students the concept of multiples and how to systematically identify the LCM among them. It guides students to recognize not just the smallest common multiple but also the pattern of multiples for each number pair. By listing out the multiples, students can visually see the commonality and determine the LCM, which is a fundamental skill in many areas of mathematics, including fraction addition and finding equivalent ratios. This approach also enhances students’ number sense and their ability to work with sequences and patterns in numbers.