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Prime and Composite Numbers
Current Filters (23 results):
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Prime and Composite Numbers
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 By Standard
 Common Core
Master Multiplication
Workbook
Master Multiplication
These math worksheets apply multiplication to the real world with interactive games and word problems that address multiplying doubledigit numbers, place values and the properties of operations.
4th grade
Math
Workbook
Prime and Composite Numbers
Lesson plan
Prime and Composite Numbers
Take your understanding of factors one step further! Use this lesson to classify factors as prime and composite numbers while creating factor trees.
4th grade
Math
Lesson plan
Number Sense 3
Guided Lesson
Number Sense 3
Understanding how our ten number system works enables students to see interesting and useful patterns and relationships in these math activities. These patterns allow students to develop more efficient mental math strategies when multiplying by multiples of 10 or 100. Students will also review rounding and apply this skill to larger numbers  up to 100,000’s place.
4th grade
Guided Lesson
Math Mixed Review Part 1: Flying Through Fourth Grade
Worksheet
Math Mixed Review Part 1: Flying Through Fourth Grade
From multidigit subtraction to identifying prime numbers, assess each student’s mastery of a variety of fourthgrade math skills.
4th grade
Math
Worksheet
Find the Factors of Prime and Composite Numbers
Exercise
Find the Factors of Prime and Composite Numbers
Have your fourth graders work through multiplication problems by learning about factors and why they are important for problem solving.
4th grade
Math
Exercise
Clap Counting with Multiples
Lesson plan
Clap Counting with Multiples
Finding the least common multiple is an essential skill for comparing, adding, and subtracting fractions! This lesson introduces students to this concept in an interactive way.
4th grade
Math
Lesson plan
Finding Factors
Worksheet
Finding Factors
With this worksheet, your child will be learning about factors, and she'll be getting multiplication practice as she goes.
4th grade
Math
Worksheet
Prime Factorization
Worksheet
Prime Factorization
This prime factorization worksheet is perfect for fourth grade mathematicians. Try this prime factorization worksheet to introduce your child to the concept.
4th grade
Math
Worksheet
Algebra Adventures
Workbook
Algebra Adventures
These math exercises will help your child practice finding coordinates, solving integer problems and factoring numbers to boost his or her algebra skills.
4th grade
Math
Workbook
Conversations About Prime and Composite Numbers
Lesson plan
Conversations About Prime and Composite Numbers
Get your students comfortable with distinguishing and discussing prime and composite numbers with this lesson that involves visuals and a card game. Use it as a standalone lesson or as support to the lesson Prime and Composite Numbers.
4th grade
Math
Lesson plan
Prime Number Turtles
Worksheet
Prime Number Turtles
Learn all about prime numbers with some turtle friends.
5th grade
Math
Worksheet
Practice with Prime Numbers
Worksheet
Practice with Prime Numbers
Help your child get to know his prime numbers with this challenging practice sheet. He'll test his ability to identify a prime number.
4th grade
Math
Worksheet
Fill in the Factor Tree
Worksheet
Fill in the Factor Tree
Introduce your child to factor trees with this simple algebra worksheet.
4th grade
Math
Worksheet
Prime Numbers vs Composite Numbers
Worksheet
Prime Numbers vs Composite Numbers
Does your child know the difference between a prime number and a composite number? Help her learn the difference with this simple worksheet.
4th grade
Math
Worksheet
Finding Prime Numbers
Worksheet
Finding Prime Numbers
What is a prime number? A number is prime when it is only divisible by 1 and itself. Help your little mathematician recognize prime numbers.
4th grade
Math
Worksheet
Prime Number Practice
Worksheet
Prime Number Practice
Give your child prime number practice with this simple worksheet.
4th grade
Math
Worksheet
It's a Maze of Hexagons!
Worksheet
It's a Maze of Hexagons!
Students practice identifying prime numbers, regular polygons, and irregular polygons!
4th grade
Math
Worksheet
Prime Factorization Explained
Worksheet
Prime Factorization Explained
Learn to break numbers down to their smallest possible pieces: prime numbers.
5th grade
Math
Worksheet
Prime Number Card Code
Worksheet
Prime Number Card Code
To solve this math worksheet your kid will need to follow the instructions and use his knowledge of prime numbers.
4th grade
Math
Worksheet
Vocabulary Cards: Conversations About Prime and Composite Numbers
Worksheet
Vocabulary Cards: Conversations About Prime and Composite Numbers
Use these vocabulary cards with the EL Support Lesson: Conversations About Prime and Composite Numbers.
4th grade
Math
Worksheet
More Amazing Hexagons!
Worksheet
More Amazing Hexagons!
This multipart worksheet helps students practice identifying the differences between regular and irregular hexagons while also reviewing their knowledge of composite and prime numbers.
4th grade
Math
Worksheet
Prime Number Hunter
Activity
Prime Number Hunter
Wondering how to help your child get a handle on prime numbers? Turn her into a prime number hunter with this hundreds chart activity.
5th grade
Math
Activity
Prime Numbers Game
Activity
Prime Numbers Game
This prime number game is the perfect way to get to know prime numbers. Deal the cards and flip them over. When players a prime number they call out, "Prime!"
4th grade
Math
Activity
Prime Numbers Resources
Prime and composite numbers are an important algebra concept when starting fourth grade math. Prime numbers are whole numbers that can only be divided by 1 and itself, while composite numbers are whole numbers that can be divided by numbers other than 1 and itself. To learn more about these numbers and how they are used in math, see the bottom of the page.
A Guide to Prime and Composite Numbers
Need a refresher on prime and composite numbers? Look no further!Prime Numbers
Prime numbers are whole numbers that can only be divided by 1 and itself. Prime numbers do not, however, include the number 1, so the smallest prime number is 2. Some examples of prime numbers are 3, 5, 7, 11, and 13.
Composite Numbers
Composite numbers are also whole numbers, but they are different from prime numbers because they can be divided by numbers other than 1 and itself. The number 1 is also not considered a composite number, so 4 is the smallest composite number. Even numbers (excluding 2) are all examples of composite numbers.
Factors
Factors are another mathematical concept used to define prime numbers. Factors are the numbers that are multiplied together to get a final product. For example, in the equation 3 × 2 = 6, 3 and 2 are both factors. Using this definition of factors, we can now say that a prime number is any number that has only two factors that are 1 and the number.
Prime and composite numbers are some of the basic building blocks of math and can be used to help understand multiplication and division concepts. To get more practice using prime and composite numbers, check out our worksheets, games, and exercises!