Factoring Worksheets

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Grade Level Estimation

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Grade Level Estimation: 1st
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Common Core Standards

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Common Core Standards

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Common Core Standards

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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 (Common Core).

Factors

Finding Factors Free

List the factors for the given numbers

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Factor Trees

Factor Trees #1 Member

Find the prime factorization by completing the basic factor trees

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Factor Trees #2 Member

More basic factor trees for teaching prime factorization

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Factor Trees #3 Member

Complete these factor trees (different style) to reduce a number into its prime factors.

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Factor Trees #4 Member

More factor trees for prime factorization.

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Prime Numbers

Prime & Composite Numbers Member

Introduction to finding prime and composite numbers

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Prime & Composite Numbers 2 Member

Practice identifying prime and composite numbers.

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Prime & Composite Table Free

Complete the prime-composite number table.

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Prime Number Mouse Trail Member

Color the prime numbers to help the mouse find the cheese.

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Prime & Composite Coloring Chart Member

Color the prime numbers red and the composite numbers blue.

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Prime & Composite Questions Member

Complete the page of short-answer questions about prime and composite numbers.

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Greatest Common Factor (GCF)

Greatest Common Factor Free

Step-by-step introduction for finding the GCF of number pairs

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Find the GCF Member

Find the GCF of each pair of numbers.

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Proper Factors and
Perfect Numbers

Perfect Factors Member

List the perfect factors of the given numbers. Perfect factors are factors of a number, excluding the number itself.

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Proper Factors & Perfect Numbers Member

List the perfect factors of the given numbers. Then determine which number is a perfect number. (A perfect number is a number whose proper factors add up to the number itself.)

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See Also:

Fraction Worksheets (Advanced)

Simplifying fractions, equivalent fractions, and more.

Adding Fractions

Add fractions with the same and different denominators

Multiplication Worksheets

Practice basic multiplication skills with these printable worksheets and games

Least Common Multiple (LCM) Worksheets

Worksheets in which students determine the least common multiple, or LCM, for each number set

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