In this practice in prime factorization 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.

In this numbers worksheet, 3rd graders fill in a crossword puzzle as they figure out the answers to 7 questions associated with number sets.

In this factors worksheet, students solve 10 problems in which a one or two digit number is analyzed and all the factors are listed. No examples are provided.

In this prime factor worksheet, students write numbers as a product of primes. Explanations and examples are provided prior to the exercise. This two-page worksheet contains ten problems.

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.

In this word problem activity, learners solve 1 short answer word problem. Students determine the age of two boys given information such as their ages are the product of prime numbers. 

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...

In this prime factorization worksheet, students solve a set of 6 problems related to prime factorization, including determining whether numbers are prime or composite and determining factors.

In 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.

For this prime factorization worksheet, students list the prime factors of the 2 digit numbers given to them. Students complete 9 problems.

In this prime factorization instructional activity, students prime factorize the nine given numbers on a line. Each number goes to the hundreds place.

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. ...

In this math worksheet, middle schoolers find the prime numbers through going through the factors in sequential order. The answers are used to create the words at the bottom of the page.

In this primes and exponents learning exercise, students read about prime numbers and their expressions, then work with a group to complete 6 problems.

In this prime factors worksheet, students make six factor trees. They tell the prime factorization for eight numbers. Students answer three questions regarding the prime factorization of numbers.

In this prime factors worksheet, 6th graders find the prime factors of two digit numbers. Students complete 6 problems where they find prime factors.

Mathematicians can be famous, too! Introduce your class to Eratosthenes with a reading passage. After they complete the passage, learners respond to five questions, some of which require opinions and others reading comprehension skills.

In this sample test worksheet, learners solve twenty-five problems covering prime factorization, equivalent fractions, greatest common factor, and plotting on a number line.  Solutions are provided.

For this prime factorization worksheet, students find the least common multiple of the given pair of numbers using factor trees. Students solve 10 problems.

In this prime factorization worksheet, students complete factor trees for 2 digit numbers to find their prime factorization. Students complete 6 problems.

The publisher has tagged this resource as designed to meet CCSS.Math,Content.6.NS.4, but it really is only the first step in the process of determining least common multiples and greatest common factors. Six numbers are given for...

In this online interactive math skills worksheet, middle schoolers solve 10 multiple choice math problems regarding rational and irrational numbers. Students may submit their answers to be scored.

In this changing improper fractions to mixed numbers worksheet, 6th graders solve four columns of twelve improper fraction plus six review problems at the bottom of the page.

In this math worksheet, students find the solutions to the whole numbers through finding the prime factorization. This could be done using number trees.