Scholastic
Study Jams! Greatest Common Factor
When one method isn't enough to teach GCF, try two! This interactive webpage introduces factors and the prime factor tree to find the greatest common factor of two numbers. After the lesson, have learners click to try the two examples...
Curated OER
Find the Factors and Prime Factors
Show the class how to find the factors of numbers. They use a variety of strategies, including unifix cubes, to find the factors of a whole number. This resource includes clear procedure to follow. Included are an anticipatory set,...
Curated OER
Number Sense and Numeration: Multiples, Factors and Square Roots
A great resource for any math teacher covering multiples, factors or square roots; this worksheet walks young mathematicians through the logic behind factoring and square roots with a systematic set of problems which gradually increase...
Math Solutions
Factor Game
Learning about factors and multiples is all fun and games with this simple math activity. The activity begins with the teacher and class playing the Factor Game together as students figure out the rules and uncover key vocabulary as they...
EngageNY
Least Common Multiple and Greatest Common Factor
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...
Curated OER
Factor Trees
In this factor trees worksheet, students make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
CK-12 Foundation
Greatest Common Factor Using Lists
By creating a list of factors for two numbers, it is easier to see the greatest common factor. Each question in an interactive resource asks pupils to identify the greatest common factor for the numbers 24 and 36 in several different...
Curated OER
Factors of Numbers from 66 to 100
Finding factors requires practice and a logical system, so help scholars develop this skill with these problems. They write out the factor list for 9 two-digit numbers and then circle the factors from a list for four more numbers....
Curated OER
Using Factor Trees
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.
Curated OER
Working With Common Factors and Common Multiples
In this math worksheet, students learn to find common factors and common multiples for sets of numbers. First students circle the common factors they see in the examples given. Then students list the factors and multiples for each number...
Illustrative Mathematics
Factors and Common Factors
This is an exercise in finding the greatest common factor of two whole numbers. Use in direct instruction or as part of your guided practice. Make up additional problems for home work. It also can be used as a mini-assessment or test...
Curated OER
Find the Prime Factors
Find prime factors can be grasped through visualization, which is exaclty what these digrams will help your learners do. For each, they examine a double-digit number and several paths connecting from it. They fill in the factors, prime...
Curated OER
Greatest Common Factor - OnlineMathLearning.com
Use this greatest common factor learning exercise to have your charges find the GCF of 3 numbers in each problem that are two and three-digit numbers. They complete 12 problems.
Curated OER
Using a Factor Tree to Find the GCF
Learners use the example of a factor tree to find the greatest common factor of three numbers in four problems.
Curated OER
Greatest Common Factor Using a Gradual Method
Learners make a list of factors of two numbers and circle the greatest common factor for both. They complete 20 problems.
CK-12 Foundation
Greatest Common Factor Using Factor Trees
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...
Curated OER
Factors, Primes, Squares
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...
Curated OER
Factors and Fractions
Find the greatest common factor of numbers. Learners review prime and composite numbers and how to find the prime factorization of a number. They also review the greatest common factor, least common multiple, and learn new ways to find...
Helping with Math
Factors With Prime and Composite Numbers (1 of 2)
Math monsters examine nine numbers, factor them, and then determine if they are composite or prime. You can print this learning exercise off of the website, but it does not fit neatly onto one page. Consider projecting it on your class...
Curated OER
Products, Multiples, Factors
In this products, multiples, and factors worksheet, students complete various activities where they solve problems for products, multiples, and factors of numbers. Students complete 14 problems.
Curated OER
Greatest Common Factor
Given 10 number pairs, learners find the greatest common factor for each. For several, one of the numbers is the greatest common factor, and for others mathematicians will need to think a little harder. There space for learners to show...
Curated OER
Factors and Multiples
Middle schoolers use the factor box process for identifying the greatest common factor and the least common multiple for 10 pairs of numbers. This single-page learning exercise is simple, and makes a useful assignment for practicing...
Illustrative Mathematics
Bake Sale
Put math into action with the real-life scenario of a bake sale. The participants at this bake sale are ready to divide their fresh-baked cookies into bags. It is up to your number crunchers to help decide how many cookies should go in...
Mathed Up!
Factors, Multiples, and Primes
Reinforce the concept of factors, multiples, and prime numbers with a 16-problem practice worksheet. Eight pages offer a variety of problem solving opportunities with clear objectives and tips for successful completion.
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