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...

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...

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...

Give the class a prime example of using prime numbers. After reviewing prime factorization of numbers with the video, pupils use their knowledge to determine greatest common factors and least common multiples in the worksheet. The...

In this factors worksheet, 9th graders solve and complete 39 different problems that include determining the greatest common factor to solve. First, they state whether each number is prime or composite. Then, students factors each...

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...

In this sample test worksheet, students solve twenty-five problems covering prime factorization, equivalent fractions, greatest common factor, and plotting on a number line.  Solutions are provided.

For this math instructional activity, students find the greatest common factor of 18 pairs of numbers. Given the prime factorization of pairs of numbers students find the greatest common factor. Students simplify fractions and rational...

In this factors and greatest common factor worksheet, 9th graders solve and complete 14 different problems. First, they state whether each number is prime or composite. Then, students find the prime factorization. In addition, they...

Build an understanding of factors and use it to write the prime factorization of numbers. After exploring key vocabulary, learners create prime factorization for given numbers. They then use the prime factorizations to determine the...

In this prime factorization and greatest common factor worksheet, students use factor trees to find the prime factorization of 8 numbers. They find the GCF of six pairs of numbers.

In this greatest common factor worksheet, students list the factors for each number and find the greatest common factor of the numbers. Kids then write the prime factorization using exponents of each number and find the greatest common...

In this greatest common factor learning exercise, students answer multiple choice questions about problem solving and rules of the greatest common factor in numbers. Students complete 10 questions total.

In this greatest common factor worksheet, students answer multiple choice questions about how to find the greatest common factor and actually finding it in problems. Students answer 10 questions total.

In this GCF worksheet, students fill in missing numbers in factor trees and write the prime factorization to find the greatest common factor. Worksheet includes links to answers and additional worksheets.

In this algebra worksheet, students solve problems using the GCF. They factor out the common variables and simplify the equations. There are 8 questions with an answer key.

Prime or composite, that is the question. Teach your class how to find the answer with this step-by-step presentation that defines and provides examples of each type of number. When addressing larger numbers, divisibility rules are...

In this primes and prime factors worksheet, 8th graders solve 21 different problems to include identifying each number as prime, composite, or neither prime nor composite and listing all the primes less than 200. Then they complete each...

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...

In this greatest common factor worksheet, students review the different ways to find the greatest common factor for numbers including listing all the factors and finding prime factorization with factor trees. Students then list the...

Young mathematicians discover trees organize more than just families — they help factor, too. The lesson plan begins with factor trees and develops slowly to factoring by grouping and special patterns. 

In this greatest common divisor worksheet, students use prime factorization to determine the greatest common factors of two or more numbers. Explanations and examples are provided. This two-page worksheet contains ten problems.

In this math skills worksheet, students solve 10 multiple choice math problems regarding prime factorization and multiples. Students may view the correct answers.

Review a variety of mathematical skills with this worksheet. In this number sense and operations worksheet, learners solve 15 different problems that include simplifying various equations. In addition, they write the powers in order from...