+
Worksheet
Curated OER

Prime Factorize

For Students 6th - 8th
In this prime factorization worksheet, students prime factorize ten given numbers. The numbers range from 6 to 25.
+
Worksheet
Curated OER

Prime Factorize

For Students 5th - 6th
For this prime factorization worksheet, students use skills to find the prime factorization of the given numbers. An answer sheet is included.
+
Worksheet
Curated OER

Factorization of Integers

For Students 7th - 8th
In this factorization of integers activity, student solve and complete 6 various types of problem. First, they write down the factors for each integer and find the prime factorization. Then, students factorize completely and find the...
+
Worksheet
Curated OER

Finding Primes-The Sieve of Eratosthenes

For Students 7th - 9th
In this middle school/Algebra I worksheet, learners use the sieve of Eratosthenes to determine the prime number less than two hundred.  The one page worksheet contains one problem.  Answer is not provided. 
+
Worksheet
Curated OER

Prime or Composite numbers

For Students 6th - 10th
In this prime and composite numbers activity, students mark each 2 or 3 digit number as either prime or composite. Students complete 60 problems.
+
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.
+
Worksheet
Curated OER

Factors

For Students 3rd - 5th
Factoring numbers helps prepare scholars for fractions and algebra, so build confidence by drilling this skill and promoting reflection in the process. Scholars start by listing factors for 18 numbers, none of which exceed 30. Next, they...
+
Interactive
Scholastic

Study Jams! Greatest Common Factor

For Students 5th - 8th Standards
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...
+
Lesson Plan
Curated OER

Prime & Composite Numbers: Algebra/Geometry Institute 2009

For Teachers 7th - 8th
Students create factor trees.  In this prime and composite activity, students model fractions using tiles.  They create factor trees and identify prime and composite numbers.  Students use grid paper and tiles to model numbers.  A...
+
Worksheet
Curated OER

Prime and Composite Numbers Optical Illusion

For Students 4th - 6th
In this prime and composite numbers practice instructional activity, students sharpen their math skills as they identify numbers as prime or composite to solve the optical illusion puzzle.
+
Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th - 8th
Students explore the concept of prime and composite numbers. In this prime and composite numbers lesson plan, students discover what makes a number prime or composite. Students then practice identifying primes and composites on the...
+
Lesson Plan
Curated OER

Perfect Numbers

For Teachers 6th
Sixth graders classify numbers as abundant, deficient, or perfect based on the relationship between the number and its factors. They review factor game using the completed lab sheet. When playing the factor game which type of numbers...
+
Lesson Plan
Curated OER

Solving Math Problems In the Real World

For Teachers 5th - 8th
Upper elementary and middles schoolers discuss and solve real world applications of math. They use formulas for volume and percents to answer real world questions. In the second part of the instructional activity, groups write and solve...
+
Lesson Plan
Curated OER

Prime Hunt On The Internet

For Teachers 8th
Eighth graders find information about primes on the Internet. They use directions for Sieve of Eratosthenes to find primes in the first 100 numbers. After a lecture/demo, 8th graders access a website imbedded in this plan to explore...
+
Worksheet
Curated OER

Prime Factorize

For Students 5th - 7th
In this factorization worksheet, students prime factorize six numbers by using the factor tree method. The numbers given go up to the number 24.
+
Lesson Plan
EngageNY

Mental Math

For Students 10th - 12th Standards
Faster than a speedy calculator! Show your classes how to use polynomial identities to multiply numbers quickly using mental math. 
+
Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders investigate the concept of prime and composite numbers. They use a review of multiplication to help explain factoring. Students are taught the definition of a prime and composite number and then practice independently.
+
Worksheet
Curated OER

Factors and Factorization

For Students 6th - 8th
In this factors instructional activity, students list all factors of given numbers.  All numbers are positive and contain two to three digits.  This four-page instructional activity contains 28 problems.  Answers are provided.
+
Worksheet
Curated OER

Number Sense and Numeration: Multiples, Factors and Square Roots

For Students 6th - 8th
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...
+
Lesson Plan
Curated OER

Prime and Composite Numbers, Prime Factorization

For Teachers 6th - 8th
Students research prime and composite numbers. With a partner, students use graph paper to draw rectangles of various sizes. They list the dimensions of rectangles and discuss how the dimensions relate to the factors of each number....
+
Worksheet
Curated OER

Factors and Prime Numbers

For Students 5th - 6th
In this factors and prime numbers worksheet, students solve 40 problems in which they find prime numbers, determine the factors of given numbers and figure out whether or not numbers are prime. This page is intended for online use but...
+
Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 8th
Eighth graders explore prime and composite numbers. Given division problems, they use color tiles to model solutions to division problems. Through activities and observation, 8th graders discover the meaning of prime and composite...
+
Worksheet
Curated OER

Math Worksheet: Factoring

For Students 4th - 5th
In this math factoring worksheet, students write a multiplication equation with prime numbers that equals the given product. There are no examples or explanations of the math vocabulary. There are18 problems to solve.
+
Worksheet
Curated OER

Grade 5 Math: Factorization 2

For Students 5th
In this grade 5 math worksheet, 5th graders write 8 numbers as the product of their prime factors, using exponents to show multiples of the prime factor when needed.