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Worksheet
Curated OER

Quick Quiz: Prime or Composite?

For Students 4th - 5th
In this prime/composite quiz activity, learners identify 12 numbers as either prime or composite. Answers are included on page 2.
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Lesson Plan
Curated OER

Numbers 1.1

For Teachers 11th - 12th
In this numbers 1.1 worksheet, students solve 64 problems about all kinds of numbers:  rational, irrational, prime, composite, square roots, fractions, decimals.
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Worksheet
Curated OER

Find the Prime Factors

For Students 4th - 7th
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...
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Lesson Plan
Scholastic

Optical Illusion

For Students 3rd - 6th
Number theory gets a workout in an activity that asks individuals to identify and color code the prime numbers and the composite numbers in the provided graphic.
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Lesson Plan
Curated OER

ISTEP + Grade 6 Item Sampler

For Teachers 5th - 6th
In this cross-curricular sampler of worksheets, students determine the meaning of specialized vocabulary and to understand the precise meaning of grade-level-appropriate words, describe and connect the essential ideas, arguments, and...
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Lesson Plan
Curated OER

Prime Factorization

For Teachers 5th - 6th
Students work with prime numbers. In this prime factorization instructional activity, students review writing numbers in their prime factorization form and solve multiple problems.
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Lesson Plan
Curated OER

Am I Am I Prime?

For Teachers 7th
Seventh graders determine if a number is prime or composite.  In this determining if a number is prime or composite lesson, 7th graders use a website to help find all prime numbers between 1 and 100.  Students use a website to find...
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Lesson Plan
Curated OER

Prime Time

For Teachers 7th
Seventh graders practice determining the prime factorization of composite numbers. They create Christmas factor trees for prime numbers greater than 100. They decorate their final products with markers, crayons, colored pencils, glitter...
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Lesson Plan
Curated OER

Prime Real Estate

For Teachers 4th - 6th
Pupils analyze and discuss prime numbers and the Sieve of Eratosthenes, a procedure to sort out prime numbers. They identify the prime numbers from 1-100 by eliminating all the multiples of the first four prime numbers, and circle what...
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Interactive
Curated OER

Prime Factorizations

For Students 5th - 10th
In this prime numbers worksheet, students answer multiple choice questions about prime numbers and how they are read. Students answer 10 questions total.
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Lesson Plan
Curated OER

Prime and Composite

For Teachers 6th
Sixth graders practice implementing manipulative's to assess composite and prime numbers. They formulate representations of rational numbers in a variety of ways including graph paper, sieves of Eratosthenes and multiple worksheets.
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Lesson Plan
Curated OER

In Your Prime

For Teachers 3rd - 4th
Young scholars study how to find prime numbers. They investigate the teachings of the mathematician Eratosthenes and apply his theory of prime numbers less than 100.
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Worksheet
Curated OER

Find Prime Numbers

For Students 4th - 7th
In this finding prime numbers practice worksheet, students sharpen their problem solving skills as they solve 6 story problems.
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Lesson Plan
Curated OER

Prime Time

For Teachers 4th - 6th
Students use the provided 100 chart in order to do different activities with prime numbers.
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Lesson Plan
Curated OER

Sieve of Eratosthenes

For Teachers 5th - 8th
Students discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.
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Worksheet
Curated OER

Factorization

For Students 9th - 11th
In this algebra worksheet, studentss factor numbers using prime factorization.  They factor all the way to the prime numbers and then simplify. There are 10 questions with an answer key.
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Worksheet
Curated OER

SAT Problem Solving Practice Test 06

For Students 9th - 12th
In this SAT worksheet, students solve 10 multiple choice questions.  Students find ratios, integer relationships, prime numbers, etc.
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Interactive
CK-12 Foundation

Prime and Composite Numbers

For Students 4th - 8th Standards
Nine true or false, multiple-choice, and discussion questions make up an interactive designed to reinforce scholars' knowledge of prime and composite numbers. A number chart reveals every prime number through 100. 
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Activity
Math Learning Center

Grade 5 Supplement Set A2 – Number and Operations: Primes, Composites and Common Factors

For Teachers 5th Standards
Incorporate riddles into your math lesson by having students make tree factors and determine if the number is a prime or composite. They will also use other clues to find the answer to the riddle while sharpening their multiplication...
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Lesson Plan
Curated OER

Factors, Prime Factorization, Multiples

For Teachers 7th
Seventh graders examine Prime Factorizations, Multiples, and Factors. In this prime number, factorization, and multiples instructional activity, 7th graders identify greatest common factors and least common multiples. Students use...
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Worksheet
Curated OER

Factoring Numbers

For Students 4th - 6th
In this factoring worksheet, students read about composite and prime numbers. They then read through 2 example problems regarding factors. Finally, students solve the 6 problems at the bottom of the page.
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Worksheet
Curated OER

Primes and Prime Factors

For Students 8th
For 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...
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Worksheet
k12 Math Worksheets

Prime Factorization

For Students 6th - 8th
Your learners will get plenty of prime factoring practice with this one-page math worksheet. 
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Lesson Plan
Curated OER

Prime Numbers

For Teachers 9th - 11th
Students differentiate between prime and composite numbers. In this algebra lesson, students define the terminology and investigate the contributions made by Eratosthenes and Euclid as it relates to prime numbers. Students apply the...

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