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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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Lesson Plan
Alabama Learning Exchange

Finding Prime

For Teachers 5th - 7th Standards
Fifth and sixth graders explore prime numbers. They work with a partner to build rectangular arrays using twelve tiles. Factor pairs are noted and recorded on graph paper. Pupils construct rectangular arrays with a prime number and...
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Worksheet
Curated OER

Factors vs. Multiples

For Teachers 6th - 7th
In this math worksheet, students solve the problems that focus upon factors and multiples. They also explore the rules of divisibility.
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Interactive
Curated OER

My Test Book: Multiples and Factors

For Students 4th - 6th
In this online interactive math skills worksheet, students solve 10 multiple choice math problems regarding multiples and factors. Students may view the correct answers.
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Interactive
Curated OER

My Test Book: Multiples and Factors

For Students 4th - 6th
In this online interactive math skills instructional activity, students solve 10 multiple choice math problems regarding multiples and factors. Students may submit their answers to be scored.
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Interactive
Curated OER

Relating GCF and LCM for Grade Six

For Students 6th
In this relating GCF and LCM for Grade Six worksheet, 6th graders answer ten multiple choice questions about factors and multiples, with answers available onscreen.
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Worksheet
Curated OER

Multiples

For Students 6th - 8th
In this multiples instructional activity, middle schoolers complete multiple choice questions about multiples of a number and common factors of numbers. Students complete 10 questions.
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Lesson Plan
Curated OER

Factors of Composite Numbers

For Teachers 6th - 8th
Students find the factors to composite numbers. In this factor lesson, students discuss the definition of a composite number and how to find the factors. They complete a worksheet where they find the factors of multiple composite numbers. 
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Assessment
Bowland

The Z Factor

For Teachers 6th - 9th
Young mathematicians determine the number of hours it would take judges of the "Z Factor" television talent show to watch every act. Participants make estimates and assumptions to solve the problem.
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Lesson Plan
Curated OER

Divisibility Rules Using Scientific Calculators

For Teachers 5th - 8th Standards
Young learners apply divisibility rules to determine if a number is a factor of another number. They discuss what numbers are factors of another number and identify patterns using divisibility rules.
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Worksheet
Curated OER

Highest Common Factor and Lowest Common Multiple

For Students 6th - 7th
In this factors and multiples worksheet, students solve 50 problems in which the greatest common factor (GCF) and the lowest common multiple (LCM) are calculated. This page is intended for online use but may be completed on paper.
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Lesson Plan
Curated OER

Mission: Finding the LCM using Prime Factorization

For Teachers 5th - 6th
For this prime factorization worksheet, students find the least common multiple of the given pair of numbers using factor trees. Students solve 10 problems.
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Worksheet
Curated OER

Common Factors

For Students 6th
In this common factors worksheet, 6th graders solve 20 different problems that include various types of common factors. First, they determine the greatest common factor for each pair of numbers listed. Then, students determine the least...
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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

My Test Book: Multiples and Prime Factorization

For Students 5th - 7th
For this math skills worksheet, students solve 10 multiple choice math problems regarding prime factorization and multiples. Students may view the correct answers.
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Worksheet
Curated OER

Greatest Common Factor and Division

For Students 5th - 8th
In this greatest common factor and division instructional activity, students answer word problems about the greatest common factor and division of numbers. Students complete 10 multiple choice questions.
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Interactive
Curated OER

My Test Book: Factors and Prime Numbers

For Students 5th - 7th
In this online interactive math skills worksheet, students solve 10 multiple choice math problems regarding factors and prime numbers. Students may submit their answers to be scored.
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Interactive
Curated OER

Least Common Multiple: Post Test

For Students 4th - 8th
For this least common multiple worksheet, students answer multiple choice questions about the least common multiple of numbers and rules on how to find it. Students complete 10 questions total.
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Worksheet
Curated OER

Multiples Worksheet (2 of 2)

For Students 4th - 6th Standards
In this multiples practice worksheet, students examine eight 1 and 2-digit numbers. Students record the first 8 multiples for each of the numbers. An example is provided.
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Worksheet
Helping with Math

Factors with Prime and Composite Numbers (2 of 2)

For Students 4th - 6th Standards
Ten two-digit numbers are listed for fourth graders to factor. Once they have factored each, they circle whether the original number is prime or composite. If you click on the "Print Worksheet" button, the printable spreads the problems...
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Lesson Plan
Curated OER

Factors

For Teachers 3rd - 6th
Practice factoring numbers by using graph paper, manipulatives and computer applets.
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Lesson Plan
Curated OER

Factors and Multiples

For Teachers 6th
Sixth graders need to see the relevance in the mathematics they learn. This lesson builds on the concepts of least common multiple and greatest common factor. The lesson presents real-world problem situations for students to solve.
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Lesson Plan
Curated OER

Mighty Multiples

For Teachers 5th - 8th
Students study about multiples, common multiples, least common multiples, and lowest common denominators. They recognize that a multiple is the product resulting when two or more factors are multiplied by each other and that common...
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Worksheet
Curated OER

Unit 2: Factors

For Students 6th - 9th
In this factors worksheet, students identify prime numbers.  They use a Sieve of Eratosthenes to identify prime numbers.  Students complete factor trees and explore perfect numbers.  This factoring unit contains eight pages.  Each page...

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