Finding the Lowest Common Multiple
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can find the lowest common multiple of two numbers using listing multiples.
Part 1 of 3
Warm-up video
Khan Academy · 4:16Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
7 questions
What is the least common multiple (LCM) of 15 and 20? List the multiples of both numbers to find your answer.
Explain the process of finding the least common multiple using prime factorization for the numbers 24 and 36.
Part 3 of 3
Exit ticket
Quick comprehension check
“Find the least common multiple of 24 and 30 by listing the multiples of both numbers. Show your work. Find the least common multiple of 15 and 25 by listing the multiples of both numbers. Show your work. ”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson

