Prime Factorization Worksheets

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Our free, printable prime factorization worksheets are the place to be if great scores in finding prime factors continue to elude you. Each pdf resource here includes several composite numbers, where the students must practice determining their prime factors using the divisibility rules.

These prime factorization worksheets are most recommended for students in grade 4, grade 5, and grade 6.

CCSS: 4.OA

Prime Factorization - Easy

Nothing can match the joy of children performing prime factorization with utmost success, as in these pdf worksheets! Direct grade 4 students to break down the composite numbers up to 50 into the smallest possible prime factors.

Prime Factorization - Easy
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Prime Factorization - Moderate

Open up a promising world of practice in prime factorization for the 5th grade and 6th grade students with these prime factorization printable worksheets, where they are up against moderately difficult problems.

Prime Factorization - Moderate
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Prime Factorization - Difficult

Watch the grade 6 students use the divisibility rules with absolute mastery and find the prime factors to perfection. They will soon go all guns blazing, and write the 2-digit and 3-digit numbers as the product of prime numbers.

Prime Factorization - Difficult
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Prime Factorization of 2-Digit Numbers Worksheets

The better the child knows how to factor a number, the easier it is for them to demystify the concept of prime factorization! Encourage children to do the factorization by starting at the smallest prime number and working upward.

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Prime Factorization of 2-Digit Numbers Worksheets

Prime Factorization of 3-Digit Numbers Worksheets

To solve these 3-digit prime factorization pdfs, express each numeral in the prime factor form. The young learners will soon display the smarts to look at 220, for instance, and write it as 2 × 2 × 5 × 11.

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Prime Factorization of 3-Digit Numbers Worksheets

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