Prime Factorization Worksheet
- Grades
- Grades 4–5
- Pages
- 1
- File type
- Preparation
- Print ready
- Subject
- Math, Numbers
- Topic
- Prime factorization, Factor trees
- Resource types
- Worksheets
- Preparation
- Print ready
- Standards
- 4.OA.B.4
Product description
From the author
This worksheet is perfect for helping students practice their prime factorization skills! By creating factor trees, they will be able to see the different ways to break down a number into its prime factors. This is a great way for them to visualize and understand this important concept.
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In the classroom
Teaching tips & learning objectives
Learning objectives
Break a whole number down into its prime factors using a factor tree
Apply the same factorization method consistently across numbers of varying size (two-digit to 120)
Teaching tips
Model one factor tree before students begin.
Compare different valid starting pairs where available, and check that they lead to the same prime factorization.
Skills covered
Prime factorization — students break down six numbers, from 45 up to 120, into their prime factors.
Factor-tree method — students use a blank tree diagram to organize repeated division into prime factors.
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Curriculum
Standards, concepts & topics
Standards
Standards
- 4.OA.B.4
Core concepts
Core concepts
Prime factorization
Factor trees
Prime numbers
Topics
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