Back to Lesson Library

Finding the Least Common Multiple

Grade 645 min

Learning Objective

I can identify the least common multiple of two numbers through both listing multiples and using the LCM formula.

Lesson Flow

Watch Video

5 min

Least common multiple exercise | Factors and multiples | Pre-Algebra | Khan Academy

Unknown Channel

Practice

14 min

4 questions • Short answer

Exit Ticket

5 min

“Find the least common multiple of 24 and 30 by listing the multiples of each number. Show your work. Find the least common multiple of 15 and 25 by using the LCM formula. Show your work. ”

Teacher Guide

Get the complete package:

  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts

New to Insta~Lesson?

We would love to help you present Insta~Lesson to your colleagues and administrators. Here are a few resources you can use:

About Insta~Lesson

A simple one-pager you can use to share Insta~Lesson.

How Insta~Lesson Helps Teachers Plan

Learn how Insta~Lesson makes life easier for teachers. This is a great resource to share at a staff meeting or PD!

How Insta~Lesson Supports Instruction Schoolwide

Learn more about Insta~Lesson's dedicated supports for partner schools.

Create Your Own Lesson