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Worksheet
Curated OER

Prime or Composite numbers

For Students 6th - 10th
In this prime and composite numbers worksheet, students mark each 2 or 3 digit number as either prime or composite. Students complete 60 problems.
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Worksheet
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K12 Reader

Prime or Composite?

For Students 4th - 5th Standards
Prime numbers? Composite numbers? Prime factorization? After reading a short article about factors and prime and composite numbers, kids answer a series of comprehension questions based on the text.
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Lesson Plan
Curated OER

Prime and Composite Numbers

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

Factors of Composite Numbers

For Teachers 6th - 8th
Students find the factors to composite numbers. In this factor lesson, students discuss the definition of a composite number and how to find the factors. They complete a worksheet where they find the factors of multiple composite numbers. 
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Worksheet
Curated OER

Prime and Composite Numbers Optical Illusion

For Students 4th - 6th
In this prime and composite numbers practice worksheet, students sharpen their math skills as they identify numbers as prime or composite to solve the optical illusion puzzle.
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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

Prime Numbers and Factors

For Teachers 5th - 7th
Solving factor trees is a helpful way to introduce prime numbers. Your math class practices using this method along with two-column tables to find if a number is prime or not. They also learn other vocabulary, such as composite numbers,...
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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

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.
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Worksheet
Curated OER

Prime Numbers

For Students 4th - 6th
In this prime numbers worksheet, students read facts and complete comprehension activities. In this graph construction and drawing worksheet, students complete two activities.
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Organizer
Super Teacher Worksheets

Prime and Composite

For Students 4th - 6th Standards
Factoring is an essential component in algebra, and this worksheet prepares learners with a quick reference guide and examples. After they find all the factors, they decipher whether the number is prime or composite.
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Worksheet
Helping with Math

Factors with Prime and Composite Numbers (2 of 2)

For Students 4th - 6th Standards
Ten two-digit numbers are listed for fourth graders to factor. Once they have factored each, they circle whether the original number is prime or composite. If you click on the "Print Worksheet" button, the printable spreads the problems...
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Lesson Plan
Curated OER

Using Square Tiles to Investigate Numbers

For Teachers 5th
Fifth graders model and distinguish between prime and composite numbers. Students are paired up with another classmate to complete this lesson. Students are assigned different numbers to work with, they use square tiles to form as many...
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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

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....
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th
Fifth graders use prime factorization to identify prime and composite numbers. They use cubes to find factors. In groups, 5th graders draw rectangular arrays to discover prime numbers under 100.
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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...
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders identify prime and composite numbers and complete an activity problem. Given a 100 chart, they follow directions to create a prime number chart. In groups, 6th graders play a "Prime Take Away" activity to reinforce prime...
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Worksheet
Curated OER

6th Grade Math Worksheet

For Students 6th
In this multiple task math worksheet, 6th graders solve 10 math problems involving metric units, number lines, composite numbers, estimation and percentages.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th - 6th
Young scholars identify prime and composite numbers. In this prime and composites lesson, students are given the rules for identifying prime and composite numbers by the teacher, who gives examples on the board. Individuals then complete...
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Lesson Plan
Curated OER

Prime and Composite Numbers with use of manipulatives (Elementary, Mathematics)

For Teachers 5th - 6th
Students learn what prime and composite numbers are. They learn how to identify them by working in a group and demonstrating an understanding of one work problem with 100% accuracy using the manipulatives provided.
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Lesson Plan
Curated OER

Numbers 1.1

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

What Are You - Prime or Composite

For Teachers 8th - 10th
Students explore the concept of prime factorization. In this prime factorization lesson, students participate in an activity where they find the prime factorization and greatest common factor of a number derived from their name. Students...
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Worksheet
Curated OER

Counting From 1 to 20

For Students 1st - 4th
Children are given a mixed up number chart 1-20, and are asked to sort out all the even, odd, prime, and composite numbers. This worksheet is intended for 2nd grade but may not be suitable for learners under 10 or those who have not yet...

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