Prime Factorization Teacher Resources
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How Do You Find the Prime Factorization of a Number Using a Tree?
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 multiplication of prime factors.
3 mins 6th - 8th Math 14 Views 11 Downloads
Factoring is an important math skill, and it's often quite confusing for youngsters. This presentation does a good job of showing the basic skills and vocabulary needed to begin to understand this important process. Prime numbers, composite numbers, and prime factorization are all covered, and there's an ample supply of practice problems for learners to try their hands at.
4th - 5th Math 15 Views 47 Downloads CCSS: Adaptable
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, materials list, and a link to a printable homework page.
4th - 6th Math 71 Views 748 Downloads
How Do You Find the Greatest Common Factor of Two Numbers Using Prime Factorization?
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 factorization.
2 mins 6th - 8th Math 3 Views 2 Downloads
Factoring Composite Numbers
Ninth graders work with composite numbers to find their prime factorizations. In this Algebra I lesson, 9th graders use factor trees and division to find the prime factors of a number. Students explore the use of prime factors to determine the GCF and LCM.
9th Math 10 Views 43 Downloads
Monomial Greatest Common Factor
Sal explains that the greatest common factor of any number is the largest number divisible into both monomials and not necessarily the number with greatest value. He breaks down two numbers into their prime factors as a product of its primes then identifies the GCF of greatest common factor.
3 mins 9th - 11th Math 7 Views 17 Downloads
Prime Numbers and Prime Factorization
Clarify prime numbers, composite numbers, and prime factorization with this activity. After looking over definitions, working through prime numbers, and making composite numbers, learners are introduced to prime factorization and the Sieve of Eratosthenes.
7th - 10th Math 60 Views 276 Downloads
What is Prime Factorization?
A teacher describes how to find the prime factors of 525. She starts by describing how to use a factor tree to describe the factors of a number. Next, she uses increasingly difficult examples to illustrate this concept.
6 mins 4th - 5th Math 3 Views 19 Downloads CCSS: Adaptable
Transition to algebra
Learners recognize the difference between a prime and a composite number. In this prime and composite number lesson, students use a factor tree model to show prime factorization. Learners participate in a bingo activity. Students complete a homework worksheet.
9th - 10th Math 3 Views 29 Downloads
Primes and Prime Factors
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 of 4 factor trees shown and write the number as the product of prime numbers.
8th Math 28 Views 118 Downloads
Prime Factorization: Finding Factors in the Fifth Grade
The lesson starts out with a brain drain, which is a great way to get students to activate prior knowledge and build lasting connections. They tell everything they know about prime factorization, use their knowledge to define mathematical vocabulary, then work together to find factors of several different numbers.
5th Math 3 Views 99 Downloads
How Do You Find the Greatest Common Factor If There are No Common Factors?
Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure what that means?
3 mins 6th - 9th Math 3 Views 0 Downloads
How Do You Factor a Greatest Common Factor Out of an Expression?
What is the greatest common factor of two terms in an expression? First prime factor each of the terms. Then find the factors that they have in common. Multiply if needed. That is how to find the greatest common factor. Watch the video and see for yourself.
5 mins 6th - 9th Math 3 Views 1 Download