Curated OER
In Your Prime
Students 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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Factor Investigation
In this factor worksheet, students complete a chart for factors, proper factors, perfect numbers, deficient numbers, prime numbers, and abundant numbers.
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Prime and Composite Numbers, Prime Factorization
Middle schoolers 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...
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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.
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Prime and Composite Numbers
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.
Curated OER
Prime and Composite Numbers
Fifth graders investigate the concepts of composite and prime numbers. They factor different numbers and determine the number of factors for each. Based upon this information the number is declared prime or composite.
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...
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Unit 2: Factors
In this factors worksheet, students identify prime numbers. They use a Sieve of Eratosthenes to identify prime numbers. Students complete factor trees and explore perfect numbers. This factoring unit contains eight pages. Each page...
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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.
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Learning About Prime and Composite Numbers
Students explore the concept of prime and composite numbers. In this prime and composite numbers lesson, students determine if a number is prime or composite.
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Prime Factorization, Equivalent Fractions and GCF review
In this sample test worksheet, students solve twenty-five problems covering prime factorization, equivalent fractions, greatest common factor, and plotting on a number line. Solutions are provided.
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Prime Real Estate
Students 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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Prime and Composite
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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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...
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Find Factors of a Number
In this finding factors practice worksheet, students sharpen their problem solving skills as they solve 6 story problems.
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Make a Factor Tree
For this factoring worksheet, students solve 9 problems in which a two or three digit number is factored using a factor tree. Each number is in its own box. There are no examples.
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Common Factors And Greatest Common Factors
In this common factors and greatest common factors worksheet, students, with a partner, problem solve the factors to twenty word problems and mathematical equations.
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Greatest Common Factors
In this algebra worksheet, students solve problems using the GCF. They factor out the common variables and simplify the equations. There are 8 questions with an answer key.
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Greatest Common Factor
In this GCF learning exercise, students fill in missing numbers in factor trees and write the prime factorization to find the greatest common factor. Worksheet includes links to answers and additional worksheets.
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Greatest Common Factor #2
In this GCF worksheet, students fill in missing number in factor trees, then determine whether numbers are prime or composite. Worksheet includes links to answers and additional worksheets.
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My Test Book: Multiples and Factors
In this online interactive math skills worksheet, students solve 10 multiple choice math problems regarding multiples and factors. Students may view the correct answers.
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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
Number, Number Sense and Operations: Worksheet Four
Review a variety of mathematical skills with this worksheet. In this number sense and operations worksheet, learners solve 15 different problems that include simplifying various equations. In addition, they write the powers in order from...
EngageNY
The Power of Algebra—Finding Primes
Banks are responsible for keeping our financial information safe. Mathematics is what allows them to do just that! Pupils learn the math behind the cryptography that banks rely on. Using polynomial identities, learners reproduce the...