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Worksheet
Curated OER

Using Factor Trees

For Students 5th - 6th
In this math worksheet, students read about how to create a factor tree. Students use factor trees to determine the prime factors of 16 numbers.
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Lesson Plan
Curated OER

Factor Trees

For Teachers 4th - 7th
In this factor trees worksheet, students make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
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Worksheet
Curated OER

Using a Factor Tree to Find the GCF

For Students 4th - 6th
Learners use the example of a factor tree to find the greatest common factor of three numbers in four problems.
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Worksheet
Curated OER

LCM: Factor Trees, Numbers Up to 10

For Students 4th - 5th
Fourth and fifth graders complete factor trees to find the lowest common multiple out of the two numbers given up to the number 10. Students complete four problems.
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Worksheet
Curated OER

Factor Tree Worksheet

For Students 9th - 10th
In this prime factorization instructional activity, students use the factor tree method to solve four factorization problems. The numbers go up to the hundreds place.
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Interactive
CK-12 Foundation

Greatest Common Factor Using Factor Trees

For Students 6th Standards
Beginning with a description that sets the stage, learners are asked to break down the numbers 42 and 63 to find the greatest common denominator using factor trees. As they work through the factoring process, young mathematicians are...
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Instructional Video2:33
Curated OER

How Do You Find the Prime Factorization of a Number Using a Tree?

For Teachers 6th - 8th
A factor tree? What's a factor tree? A tree of factors? A factor tree is a method use to do the prime factorization of an integer. It's not complicated. Watch the teacher as she explains the steps and shows how to write the answer as a...
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Instructional Video6:03
Math Playground

How Do You Find GCF and LCM?

For Teachers 4th - 5th Standards
Using the numbers 225 and 270, the narrator explains how to find the greatest common factor and the least common multiple. This presentation could be used in conjunction with other videos in a series exploring how to identify prime...
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Interactive
Scholastic

Study Jams! Prime Factorization

For Students 4th - 6th Standards
Deepen the number sense of young mathematicians by exploring the process of prime factorization. Follow along with this step-by-step presentation that explains how factor trees are used to break a composite number down into its prime...
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Worksheet
Curated OER

GCF by a factor tree

For Students 5th - 9th
For this greatest common factor worksheet, students find the greatest common factor of 2 two digit numbers in each problem using factor trees. Students complete 4 problems.
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Worksheet
Curated OER

Factor Trees: 2 digit numbers

For Students 5th - 10th
in this factors worksheet, students factorize 2 digit numbers by using the factor tree method. Students factorize 4, 2 digit numbers total.
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Worksheet
Helping with Math

Prime Factorization with Factor Trees (2 of 2)

For Students 3rd - 5th Standards
The publisher has tagged this resource as designed to meet CCSS.Math,Content.6.NS.4, but it really is only the first step in the process of determining least common multiples and greatest common factors. Six numbers are given for...
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Worksheet
Curated OER

Make a Factor Tree

For Students 5th - 6th
In this factoring worksheet, learners solve 9 problems in which a two or three digit number is factored using a factor tree. Each number is in its own box. There are no examples.
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Worksheet
Curated OER

LCM of 3 Numbers: Factor Trees

For Students 5th - 8th
In this lowest common multiples worksheet, students create factor trees to find the lowest common multiple of 3 numbers. Students complete 4 problems.
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Worksheet
Curated OER

Chapter 2 Review: Prime Factorization

For Students 6th - 8th
In this prime factorization learning exercise, learners find the prime factorization of numbers by using a factor tree. They compare fractions and identify equivalent fractions, and find the greatest common factor, order numbers, and...
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Instructional Video4:18
Curated OER

How Do You Find the Least Common Multiple by Multiplying Common Factors?

For Teachers 8th - 11th
Don't get Least Common Multiple mixed up with Greatest Common Factor, it's easy to do. Use the prime factor tree to find the prime factorization of each of the terms given. This is where it gets tricky figuring out the LCM, so watch this...
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Instructional Video2:08
Curated OER

Constructing a Factor Tree

For Teachers 5th - 8th
The instructor uses a diagram of a tree to work on to show how to do prime factorization. This is a short and to the point video.
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Lesson Plan
EngageNY

Least Common Multiple and Greatest Common Factor

For Students 6th Standards
Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...
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Instructional Video4:44
Krista King Math

Prime Factorization and Product of Primes

For Students 3rd - 7th Standards
Demonstrate a method for finding the prime factorization of numbers using factor trees and a video that explains how to break a number down to its prime factors. The instructor reinforces the concept of factors by displaying the...
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PPT
Curated OER

Factors, Primes, Squares

For Teachers 5th - 6th
Teach the joys of factoring and introduce prime and square numbers. Upper elementary learners are introduced to these concepts through complete definitions, examples, and practice problems. A variety of strategies, such as factor trees...
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PPT
Curated OER

Factoring

For Teachers 6th - 7th
Show how to factor four different numbers using a factor tree. This short slide show defines factoring and then shows how each number 28, 32, 33, and 30 can all be factored. 
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Worksheet
Curated OER

Prime Factorization - Practice 7-2

For Students 3rd - 5th
Finding the prime factors of two numbers is the focus of this math worksheet. Learners write the factors to complete 2 factor trees, write the prime factorization for 9 numbers and answer 2 word problems.
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Worksheet
Curated OER

LCM-Factor Trees

For Students 4th - 6th
In this LCM worksheet, students use work space provided to create factor trees and find the LCM of sets of numbers. Answers are included on page 2.
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Instructional Video2:15
Curated OER

How Do You Find the Greatest Common Factor of Two Numbers Using Prime Factorization?

For Teachers 6th - 8th
Here's a quick review on how to use a prime factor tree to find the greatest common factor of two numbers. This is one of the simplest ways to find the greatest common factor. So watch this video to get a refresher on how to do prime...

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