Finding the Lowest Common Multiple

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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

1

What is the least common multiple (LCM) of 15 and 20? List the multiples of both numbers to find your answer.

2

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

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  • Student Handout

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