K8 Worksheets

Prime Factorization Worksheets

Channelize practice with our free prime factorization worksheets. Kids need to identify which prime numbers multiply to yield a particular number and list them. They can start with smaller numbers, then figure out the prime factors of numbers greater than 100, and write each number as a product of its prime factors.

Listing Prime Factors of Numbers | 1 to 25

Listing Prime Factors of Numbers | 1 to 25
Worksheet Answer Key

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Writing Prime Factors of Numbers | 26 to 50

Writing Prime Factors of Numbers | 26 to 50
Worksheet Answer Key

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Writing Numerals as Products of Prime Factors | 51 to 100

Writing Numerals as Products of Prime Factors | 51 to 100
Worksheet Answer Key

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Finding Prime Factors of Numbers Greater Than 100

Finding Prime Factors of Numbers Greater Than 100
Worksheet Answer Key

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