Curated OER
Identify Prime and Composite Numbers
Fourth and fifth graders identify numbers as prime or composite, list composite numbers that could be mistaken for prime and answer a "prediction" question.
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Quick Quiz: Prime or Composite?
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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Prime and Composite Numbers - Kenwood Academy
Learners investigate prime and composite numbers. They use a number chart and cross out multiples of 2,3,5 etc. up to 100. Pupils fold pieces of masking tape around pennies and label them with composite numbers, then fold masking tape...
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Challenge: Prime Numbers
In this exploring prime numbers worksheets, learners use the definition of prime numbers to solve 4 problems, then list prime and composite numbers from 2-18.
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Prime and Composite Number Mini Lab
Elementary schoolers determine the attributes of prime and composite numbers. Pupils, working in pairs, participate in an activity in which they use manipulatives to show the rectangles that can be made from square tiles. They practice...
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Prime Numbers and Factors
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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Prime And Composite Numbers - Fuzoku Elementary
Fourth graders investigate the concept of prime and composite numbers. Students study the visual representation for the numbers and use the pictures in order to develop designs for larger numbers. The goal of the instructional activity...
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Prime Factorizations - Post Test
In this prime factorizations worksheet, students complete a set of 10 multiple choice questions. Students may print out the test or click on a link to see answers.
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Counting From 1 to 20
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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Mastering Math Vocabulary of Prime and Composite Numbers Using Venn Diagrams
Create Venn diagrams. Your class will discover the relationships between even and prime numbers. Next, they will compare that to the relationship between odd and composite numbers.
Math Mammoth
Factoring and Primes 2
For this factoring learning exercise, students read about prime factorization, factor using factor trees, build numbers from primes and complete a challenge puzzle.
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Primes in Product
In this secondary mathematics worksheet, students must determine the two prime numbers and one composite number that would be factors of the given product. The one page worksheet contains one problem with the solution.
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Prime Factorization
In this prime factorization instructional activity, students solve 7 multiple choice problems. Students find the prime factorization of 91, 84, 78, 70, 67,63, and 36.
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Number facts
In this number facts worksheet, students determine the number associated with each of the twenty-five facts provided. Students then need to determine how the answers are related to each other. Answers are provided at the end of the...
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Factors and Factorization
In this factors learning exercise, students list all factors of given numbers. All numbers are positive and contain two to three digits. This four-page learning exercise contains 28 problems. Answers are provided.
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SAT Problem Solving Practice Test 06
In this SAT activity, students solve 10 multiple choice questions. Students find ratios, integer relationships, prime numbers, etc.
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Factors Game
In this factors game worksheet, teams of students identify factors. They find proper factors of a given number This one-page worksheet cotnains approximately 40 problems.
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Prime Time
Fifth graders complete activities related to prime and composite numbers. In this prime instructional activity, 5th graders make a hundreds chart with all the prime numbers. They create their own card game which deals with prime and...
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Transition to algebra
Students 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. Students participate in a bingo activity. Students...
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Prime & Composite Numbers: Algebra/Geometry Institute 2009
Students create factor trees. For this prime and composite lesson, 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...
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Pair of Dice Worksheet
In this probability worksheet, students problem solve 5 word problems involving finding the probability of 5 scenarios from rolling a pair of dice.
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Factors
In this factors worksheet, students identify factors of given numbers. They identify prime numbers and name the least common multiple. This two-page worksheet contains 24 problems. This worksheet is designed to be completed mentally.
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Sets
In this numbers worksheet, 3rd graders fill in a crossword puzzle as they figure out the answers to 7 questions associated with number sets.
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Prime Numbers
In this prime numbers worksheet, students read facts and complete comprehension activities. In this graph construction and drawing worksheet, students complete two activities.