Prime factors
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Free printable prime factors worksheets for 4th grade. Students identify prime factors of given numbers and express the prime factorization clearly, deepening their understanding of number structure. These worksheets connect to divisibility, GCF, and later algebraic factoring concepts. Part of our factoring worksheets collection.
What You'll Learn
- Identify the prime factors of composite numbers
- Recognize which factors of a number are prime
- Write numbers as products of their prime factors
FAQ
What are the first 10 prime numbers students should know by 4th grade?⌄
The first ten primes are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29 — knowing these helps students quickly identify prime factors when decomposing any number.
How does recognizing prime factors help with simplifying fractions?⌄
When students can express numerator and denominator as products of prime factors, they can easily cancel common primes to simplify the fraction to its lowest terms.
Is prime factorization explicitly listed in the 4th grade Common Core standards?⌄
CCSS 4.OA.B.4 covers prime and composite numbers; prime factorization is an extension often included in 4th grade enrichment and forms a core 6th grade standard.
Ratings & Reviews
3Emily W.
Homeschool parent · Verified download
Excited for this one! I've been hunting for a good printable on this topic for weeks.
Helpful · 9
Priya N.
Kindergarten Teacher · Verified download
This is going straight into my lesson plans the second it drops. Please prioritize this one!
Helpful · 13
Maria R.
Homeschool parent · Verified download
Can't wait! This is exactly what we've been looking for. Please make it soon!
Helpful · 7
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