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4th Grade Factors, Multiples & Prime Numbers Worksheets

4th Grade Factors, Multiples & Prime Numbers: find factor pairs and multiples and sort numbers as prime or composite. Every worksheet is free, prints as a PDF with an answer key, and can be assigned online. The ones teachers open most are first.

← All 4th grade topics 4.OA.4

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Identifying Prime and Composite Numbers worksheet

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Identifying Prime and Composite Numbers

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Student objectives

Decide whether a number is prime or composite.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Finding Factors worksheet

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Finding Factors

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Student objectives

Find which numbers divide evenly into a given number.
Identify all the factor pairs that make a number when multiplied.
Use multiplication facts to decide quickly if a number is a factor.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Identifying Factors (With Help) worksheet

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Identifying Factors (With Help)

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Student objectives

Find all the numbers that divide evenly into a given number.
Use multiplication facts to spot factor pairs.
Check your list to make sure you didn’t miss any factors or include a number that doesn’t divide evenly.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Multiples within 100 worksheet

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Multiples within 100

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Student objectives

Recognize which numbers are multiples of a given number up to 100.
Decide if a number is divisible by another number using multiplication facts.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Determining Factors and Multiples worksheet

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Determining Factors and Multiples

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Student objectives

Find all the factors of a number by checking which numbers divide evenly.
Decide whether a number is a multiple of another number using multiplication facts and division.
Identify factor pairs that make a given product.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Finding Multiples worksheet

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Finding Multiples

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Student objectives

Use multiple rules (multiples of 3 have digits that add to 3, multiples of 5 end in 5 or 0, etc) to determine if a number is a multiple of another number.
Use multiplication facts to decide which numbers are multiples of a given number.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Finding Multiples (2, 3, 5, 6, 9, 10) worksheet

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Finding Multiples (2, 3, 5, 6, 9, 10)

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Student objectives

Decide whether a number is a multiple of 2, 3, 5, 6, 9, or 10.
Use quick divisibility rules (like last digit or digit sum) to check multiples without long division.
Explain why a number is or is not a multiple using multiplication facts.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Identifying Factor Pairs worksheet

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Identifying Factor Pairs

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Student objectives

Find two numbers that multiply to make a given number.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Identifying Multiples from a List worksheet

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Identifying Multiples from a List

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Student objectives

Pick out which numbers in a group are multiples of a given number.
Use skip-counting to check whether a number is a multiple.
Decide if one number is divisible by another without doing long division.
Connect multiples to multiplication facts you already know.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Finding Prime Factors worksheet

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Finding Prime Factors

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Student objectives

Break a number into its prime factors using division by small primes.
Write a number as a product of prime numbers (prime factorization).
Use factor pairs to help find all the prime factors of a number.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Mystery Number Riddles worksheet

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Mystery Number Riddles

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Student objectives

Use clues about factors to narrow down a number
Figure out numbers based on their multiples
Tell whether a number is prime or composite
Combine several clues to find one correct answer

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Matching Equations to the Value of n worksheet

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Matching Equations to the Value of n

Student objectives

Find the value of n that makes a multiplication equation true.
Match each equation to its solution from a set of values.
Solve every equation before matching, rather than guessing from one.

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4th Grade Factors, Multiples & Prime Numbers Worksheets - Factor Pair Word Problems worksheet

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Factor Pair Word Problems

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Student objectives

Find all the factor pairs for a given number
Use factor pairs to figure out possible equal groupings
Work out different ways to arrange items into rows and columns
Read a word problem and decide which factor pairs answer the question

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More 4th grade topics

Decimals: Tenths & Hundredths 33 Adding & Subtracting Fractions 16 Place Value & Rounding 44 Equivalent & Comparing Fractions 14 Multiplication 17 Lines, Angles & Classifying Shapes 15 Long Division 19 Measuring Angles 9 Measurement & Conversions 31 Multi-Digit Addition & Subtraction 17 Area & Perimeter 4 Multiplying Fractions by Whole Numbers 7 Multiplicative Comparison 11 Multi-Step Word Problems 12 Patterns 18 Lines of Symmetry 5 Money Word Problems 13 Line Plots 9

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