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Worksheet
Curated OER

Number System

For Students 4th - 5th
In this number system worksheet, students complete several questions writing number sets for natural numbers, odd numbers, and prime numbers.
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Worksheet
Curated OER

Finding Primes-The Sieve of Eratosthenes

For Students 7th - 9th
For this middle school/Algebra I worksheet, students use the sieve of Eratosthenes to determine the prime number less than two hundred.  The one page worksheet contains one problem.  Answer is not provided. 
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Worksheet
Curated OER

Prime or Composite numbers

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

Prime and Composite Numbers Optical Illusion

For Students 4th - 6th
In this prime and composite numbers practice instructional activity, learners sharpen their math skills as they identify numbers as prime or composite to solve the optical illusion puzzle.
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Worksheet
Curated OER

Prime Factorize

For Students 6th - 8th
In this prime factorization worksheet, students prime factorize ten given numbers. The numbers range from 6 to 25.
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Worksheet
Curated OER

Prime Factorize

For Students 5th - 6th
For this prime factorization worksheet, students use skills to find the prime factorization of the given numbers. An answer sheet is included.
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Worksheet
Curated OER

Sets

For Students 3rd
For 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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Worksheet
Curated OER

Factorization of Integers

For Students 7th - 8th
In this factorization of integers worksheet, student solve and complete 6 various types of problem. First, they write down the factors for each integer and find the prime factorization. Then, students factorize completely and find the...
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Worksheet
Curated OER

Math in English Skills X Exercise Book

For Students 1st - 6th
Provide your remedial math learners with a handy packet that will help them practice prime factorization, exponents and roots, and multiplication and division of fractions. The packet includes 20 pages, bright images, and answer keys....
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Worksheet
Curated OER

Number Theory Worksheet 2: The Sieve of Eratosthenes

For Students 5th - 6th
In this primes and multiples worksheet, students follow the directions to circle primes and multiples on a hundred chart until all prime numbers from 1 to 100 are circled. This is called the Sieve of Eratosthenes.
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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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Worksheet
Curated OER

Factoring Worksheet 1

For Students 4th - 6th
In this factorization activity, students complete 20 problems where they factor whole numbers to get to their prime numbers. Answers are found by clicking a link. An excellent in-class activity, or homework assignment.
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Lesson Plan
Curated OER

Patterns

For Teachers 9th
In this Algebra I worksheet, 9th graders explore number and geometric patterns and use the Sieve of Eratosthenes to find the prime numbers less than one hundred.  The six page worksheet contains eight multipart questions.  Answers are...
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Worksheet
Curated OER

Prime Factorize

For Students 5th - 7th
In this factorization worksheet, students prime factorize six numbers by using the factor tree method. The numbers given go up to the number 24.
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Worksheet
Curated OER

Factors and Prime Numbers

For Students 5th - 6th
In this factors and prime numbers worksheet, students solve 40 problems in which they find prime numbers, determine the factors of given numbers and figure out whether or not numbers are prime. This page is intended for online use but...
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Worksheet
Curated OER

5th Grade Math Sheet

For Students 5th
In this 5th grade math learning exercise, 5th graders solve 10 various types of questions that include place value and prime numbers. First, they find the least common multiple of two numbers. Then, students determine the value of an...
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Worksheet
Curated OER

Factors

For Students 5th - 6th
In this set of factors worksheets, students explore factoring, prime numbers, highest common factor, least common multiple, and exponents and powers. There are seventeen total problems on four separate worksheets. There is an answer sheet.
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Worksheet
Curated OER

Using Factor Trees

For Students 5th - 6th
In this math learning exercise, students read about how to create a factor tree. Students use factor trees to determine the prime factors of 16 numbers.
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Worksheet
Curated OER

Identify Numbers

For Students Higher Ed
For this identify numbers worksheet, students identify prime, composite, perfect, deficient, and abundant numbers listed on a one-hundred board. This two-page worksheet contains one-hundred numbers on each page.
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Worksheet
Curated OER

Factors and Prime Factorization

For Students 6th
In this factors and prime factorization activity, 6th graders use examples to find all the factors for six numbers, then write six more numbers as products of prime factorization.
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Lesson Plan
Curated OER

Prime Factorization

For Teachers 6th - 8th
In this math worksheet, students find the solutions to the problems while looking for the prime factors. There is an example at the top of the page.
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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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Worksheet
Curated OER

Practice in Prime Factorization

For Students 7th - 8th
In this practice in prime factorization instructional activity, students solve 8 columns of 10 problems each about prime factors for two and three digit numbers, plus two review problems in each column.
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Worksheet
Curated OER

Primes and Triples

For Students 12th - Higher Ed
In this primes worksheet, learners list three triples that are generated by formulas. They explain how to generate these formulas and discuss the Pythagorean Triples. This one-page worksheet contains one multi-step problem.

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