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Grade Level Estimation: 1st
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Common core standards listing. [x] close
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A collection of math worksheets on finding factors, greatest common factors, and factor trees, as well as prime numbers & composite numbers.
To see Common Core Standards for these worksheets, click on the apple core symbol ().
FactorsFinding Factors Free
List the factors for the given numbers
Factor TreesFactor Trees #1
Find the prime factorization by completing the basic factor treesFactor Trees #2
More basic factor trees for teaching prime factorizationFactor Trees #3
Complete these factor trees (different style) to reduce a number into its prime factors.Factor Trees #4
More factor trees for prime factorization.
Prime NumbersPrime & Composite Numbers
Introduction to finding prime and composite numbersPrime & Composite Numbers 2
Practice identifying prime and composite numbers.Prime & Composite Table Free
Complete the prime-composite number table.Prime Number Mouse Trail
Color the prime numbers to help the mouse find the cheese.Prime & Composite Coloring Chart
Color the prime numbers red and the composite numbers blue.Prime & Composite Questions
Complete the page of short-answer questions about prime and composite numbers.
Greatest Common Factor (GCF)Greatest Common Factor Free
Step-by-step introduction for finding the GCF of number pairsFind the GCF
Find the GCF of each pair of numbers.
See Also:Fraction Worksheets (Advanced)
Simplifying fractions, equivalent fractions, and more.Adding Fractions
Add fractions with the same and different denominatorsMultiplication Worksheets
Practice basic multiplication skills with these printable worksheets and gamesLeast Common Multiple (LCM) Worksheets
Worksheets in which students determine the least common multiple, or LCM, for each number set