Curated OER
Prime and Composite Numbers, Prime Factorization
Learners 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....
Curated OER
Prime and Composite Numbers
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.
Curated OER
Prime and Composite Numbers
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...
Curated OER
Prime and Composite Numbers
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...
Helping with Math
Factors with Prime and Composite Numbers (2 of 2)
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...
Curated OER
Numbers 1.1
In this numbers 1.1 worksheet, students solve 64 problems about all kinds of numbers: rational, irrational, prime, composite, square roots, fractions, decimals.
Curated OER
Sieve of Eratosthenes
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.
Curated OER
ISTEP + Grade 6 Item Sampler
In this cross-curricular sampler of worksheets, learners 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...
Curated OER
Am I Am I Prime?
Seventh graders determine if a number is prime or composite. In this determining if a number is prime or composite lesson plan, 7th graders use a website to help find all prime numbers between 1 and 100. Students use a...
Curated OER
What Are You - Prime or Composite
Students explore the concept of prime factorization. In this prime factorization instructional activity, students participate in an activity where they find the prime factorization and greatest common factor of a number derived from...
Curated OER
Prime Time
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...
Curated OER
Using Square Tiles to Investigate Numbers
Fifth graders model and distinguish between prime and composite numbers. Students are paired up with another classmate to complete this instructional activity. Students are assigned different numbers to work with, they use square tiles...
Curated OER
Prime Time
Learners participate in activities to investigate properties of numbers. They identify prime and composite numbers and determine the patterns associated with these numbers. They answer questions associated with each activity.
Curated OER
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 activity is intended for 2nd grade but may not be suitable for learners under 10 or those who have not...
Curated OER
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....
Willow Tree
Factoring
Build an understanding of factors and use it to write the prime factorization of numbers. After exploring key vocabulary, learners create prime factorization for given numbers. They then use the prime factorizations to determine the...
Curated OER
Mathematics: Prime and Composite Numbers
Sixth graders explore how to apply the commutative property and the rules of divisibility. They examine the difference between prime and composite numbers.
Curated OER
Prime or Composite numbers
In this prime and composite numbers worksheet, students mark each 2 or 3 digit number as either prime or composite. Students complete 60 problems.
Curated OER
Factoring Numbers
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.
Curated OER
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...
k12 Math Worksheets
Prime Factorization
Your learners will get plenty of prime factoring practice with this one-page math instructional activity.
Houghton Mifflin Harcourt
Unit 4 Math Vocabulary Cards (Grade 5)
Common denominators, factors, and rounding are a few of the terms in a set of flash cards designed to reinforce math vocabulary. Forty-two cards offer a bold-faced vocabulary word or a corresponding definition alongside an...
Curated OER
Prime Numbers
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...
Curated OER
Prime and Composite Numbers
Students 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 a...