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4th and 5th Grade
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Prime Factorization Explained
Prime Factorization Explained
Worksheet
Prime Factorization Explained large image
Prime Factorization Explained
Fifth Grade
Learn to break numbers down to their smallest possible pieces: prime numbers.
Worksheet
Prime Factorization Explained
Prime Factorization Explained
Worksheet
Prime Factorization Explained
Learn to break numbers down to their smallest possible pieces: prime numbers.
Fifth Grade
Worksheet
Find the Greatest Common Factor By Prime Factorization #3
Find the Greatest Common Factor By Prime Factorization #3
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #3 large image
Find the Greatest Common Factor By Prime Factorization #3
Fifth Grade
Number Theory
Find the greatest common factor (GCF) using the prime factorization method with this sixth-grade practice worksheet!
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #3
Find the Greatest Common Factor By Prime Factorization #3
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #3
Find the greatest common factor (GCF) using the prime factorization method with this sixth-grade practice worksheet!
Fifth Grade
Number Theory
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #1
Find the Greatest Common Factor By Prime Factorization #1
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #1 large image
Find the Greatest Common Factor By Prime Factorization #1
Fifth Grade
Number Theory
Use this number theory worksheet to practice finding the greatest common factor of two numbers by finding the prime factorization! 
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #1
Find the Greatest Common Factor By Prime Factorization #1
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #1
Use this number theory worksheet to practice finding the greatest common factor of two numbers by finding the prime factorization! 
Fifth Grade
Number Theory
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #2
Find the Greatest Common Factor By Prime Factorization #2
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #2 large image
Find the Greatest Common Factor By Prime Factorization #2
Fifth Grade
Number Theory
Grow students’ math skills with more practice finding the greatest common factor by using factor trees to find the prime factorization.
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #2
Find the Greatest Common Factor By Prime Factorization #2
Interactive Worksheet
Find the Greatest Common Factor By Prime Factorization #2
Grow students’ math skills with more practice finding the greatest common factor by using factor trees to find the prime factorization.
Fifth Grade
Number Theory
Interactive Worksheet
Prime Number Maze
Prime Number Maze
Interactive Worksheet
Prime Number Maze large image
Prime Number Maze
Fourth Grade
Number Theory
Become the prime expert of prime numbers with this engaging maze!
Interactive Worksheet
Prime Number Maze
Prime Number Maze
Interactive Worksheet
Prime Number Maze
Become the prime expert of prime numbers with this engaging maze!
Fourth Grade
Number Theory
Interactive Worksheet
Prime Number Practice
Prime Number Practice
Worksheet
Prime Number Practice large image
Prime Number Practice
Fourth Grade
Number Theory
Give your child prime number practice with this simple worksheet.
Worksheet
Prime Number Practice
Prime Number Practice
Worksheet
Prime Number Practice
Give your child prime number practice with this simple worksheet.
Fourth Grade
Number Theory
Worksheet
Prime Numbers Game
Prime Numbers Game
Activity
Prime Numbers Game large image
Prime Numbers Game
Fourth Grade
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!"
Activity
Prime Numbers Game
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!"
Fourth Grade
Activity
Finding Prime Numbers
Finding Prime Numbers
Worksheet
Finding Prime Numbers large image
Finding Prime Numbers
Fourth Grade
Number Theory
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.
Worksheet
Finding Prime Numbers
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.
Fourth Grade
Number Theory
Worksheet
In Your Prime
In Your Prime
Activity
In Your Prime large image
In Your Prime
Fourth Grade
Number Theory
Learning to identify prime numbers can be tricky. But this fun card game can make memorizing some basic prime numbers a breeze.
Activity
In Your Prime
In Your Prime
Activity
In Your Prime
Learning to identify prime numbers can be tricky. But this fun card game can make memorizing some basic prime numbers a breeze.
Fourth Grade
Number Theory
Activity
Prime Number Hunter
Prime Number Hunter
Activity
Prime Number Hunter large image
Prime Number Hunter
Fifth Grade
Wondering how to help your child get a handle on prime numbers? Turn her into a prime number hunter with this hundreds chart activity.
Activity
Prime Number Hunter
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.
Fifth Grade
Activity
Prime Number Turtles
Prime Number Turtles
Worksheet
Prime Number Turtles large image
Prime Number Turtles
Fifth Grade
Learn all about prime numbers with some turtle friends.
Worksheet
Prime Number Turtles
Prime Number Turtles
Worksheet
Prime Number Turtles
Learn all about prime numbers with some turtle friends.
Fifth Grade
Worksheet
Practice with Prime Numbers
Practice with Prime Numbers
Worksheet
Practice with Prime Numbers large image
Practice with Prime Numbers
Fourth Grade
Help your child get to know his prime numbers with this challenging practice sheet. He'll test his ability to identify a prime number.
Worksheet
Practice with Prime Numbers
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.
Fourth Grade
Worksheet
Identifying Prime Numbers Maze
Identifying Prime Numbers Maze
Interactive Worksheet
Identifying Prime Numbers Maze large image
Identifying Prime Numbers Maze
Fourth Grade
Number Theory
Give students practice identifying prime numbers with this fun this maze activity!
Interactive Worksheet
Identifying Prime Numbers Maze
Identifying Prime Numbers Maze
Interactive Worksheet
Identifying Prime Numbers Maze
Give students practice identifying prime numbers with this fun this maze activity!
Fourth Grade
Number Theory
Interactive Worksheet
Dino Bones: Prime Numbers
Dino Bones: Prime Numbers
Game
Dino Bones: Prime Numbers large image
Dino Bones: Prime Numbers
Fourth Grade
Number Theory
Learners differentiate between prime and composite numbers while unearthing dinosaur bones.
Game
Dino Bones: Prime Numbers
Dino Bones: Prime Numbers
Game
Dino Bones: Prime Numbers
Learners differentiate between prime and composite numbers while unearthing dinosaur bones.
Fourth Grade
Number Theory
Game
Which Numbers Are Prime?
Which Numbers Are Prime?
Worksheet
Which Numbers Are Prime? large image
Which Numbers Are Prime?
Fourth Grade
Number Theory
Students practice solving a variety of equations, then determine if the answer is a prime number.
Worksheet
Which Numbers Are Prime?
Which Numbers Are Prime?
Worksheet
Which Numbers Are Prime?
Students practice solving a variety of equations, then determine if the answer is a prime number.
Fourth Grade
Number Theory
Worksheet
Prime and Composite Numbers to 100
Prime and Composite Numbers to 100
Worksheet
Prime and Composite Numbers to 100 large image
Prime and Composite Numbers to 100
Fourth Grade
Number Theory
Learn to identify prime and composite numbers in this guided worksheet!
Worksheet
Prime and Composite Numbers to 100
Prime and Composite Numbers to 100
Worksheet
Prime and Composite Numbers to 100
Learn to identify prime and composite numbers in this guided worksheet!
Fourth Grade
Number Theory
Worksheet
Prime and Composite Numbers
Prime and Composite Numbers
Lesson Plan
Prime and Composite Numbers large image
Prime and Composite Numbers
Fourth Grade
Take your understanding of factors one step further! Use this lesson to classify factors as prime and composite numbers while creating factor trees.
Lesson Plan
Prime and Composite Numbers
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.
Fourth Grade
Lesson Plan
Prime and Composite Numbers to 20
Prime and Composite Numbers to 20
Worksheet
Prime and Composite Numbers to 20 large image
Prime and Composite Numbers to 20
Fourth Grade
Number Theory
Take a deep dive into prime and composite numbers to 20 with this exploratory worksheet!
Worksheet
Prime and Composite Numbers to 20
Prime and Composite Numbers to 20
Worksheet
Prime and Composite Numbers to 20
Take a deep dive into prime and composite numbers to 20 with this exploratory worksheet!
Fourth Grade
Number Theory
Worksheet
Prime Number Card Code
Prime Number Card Code
Worksheet
Prime Number Card Code large image
Prime Number Card Code
Fourth Grade
To solve this math worksheet your kid will need to follow the instructions and use his knowledge of prime numbers.
Worksheet
Prime Number Card Code
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.
Fourth Grade
Worksheet
Conversations About Prime and Composite Numbers
Conversations About Prime and Composite Numbers
Lesson Plan
Conversations About Prime and Composite Numbers large image
Conversations About Prime and Composite Numbers
Fourth Grade
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.
Lesson Plan
Conversations About Prime and Composite Numbers
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.
Fourth Grade
Lesson Plan
Factors of Prime and Composite Numbers #2
Factors of Prime and Composite Numbers #2
Worksheet
Factors of Prime and Composite Numbers #2 large image
Factors of Prime and Composite Numbers #2
Fourth Grade
Number Theory
Get more practice determining factors of prime and composite numbers with this helpful math worksheet!
Worksheet
Factors of Prime and Composite Numbers #2
Factors of Prime and Composite Numbers #2
Worksheet
Factors of Prime and Composite Numbers #2
Get more practice determining factors of prime and composite numbers with this helpful math worksheet!
Fourth Grade
Number Theory
Worksheet
Factors of Prime and Composite Numbers #1
Factors of Prime and Composite Numbers #1
Worksheet
Factors of Prime and Composite Numbers #1 large image
Factors of Prime and Composite Numbers #1
Fourth Grade
Number Theory
Learners practice determining factors of prime and composite numbers with this fourth-grade math worksheet!
Worksheet
Factors of Prime and Composite Numbers #1
Factors of Prime and Composite Numbers #1
Worksheet
Factors of Prime and Composite Numbers #1
Learners practice determining factors of prime and composite numbers with this fourth-grade math worksheet!
Fourth Grade
Number Theory
Worksheet
Prime Numbers vs Composite Numbers
Prime Numbers vs Composite Numbers
Interactive Worksheet
Prime Numbers vs Composite Numbers large image
Prime Numbers vs Composite Numbers
Fourth Grade
Number Theory
Does your child know the difference between a prime number and a composite number? Help them learn the difference with this simple worksheet.
Interactive Worksheet
Prime Numbers vs Composite Numbers
Prime Numbers vs Composite Numbers
Interactive Worksheet
Prime Numbers vs Composite Numbers
Does your child know the difference between a prime number and a composite number? Help them learn the difference with this simple worksheet.
Fourth Grade
Number Theory
Interactive Worksheet
Vocabulary Cards: Conversations About Prime and Composite Numbers
Vocabulary Cards: Conversations About Prime and Composite Numbers
Worksheet
Vocabulary Cards: Conversations About Prime and Composite Numbers large image
Vocabulary Cards: Conversations About Prime and Composite Numbers
Fourth Grade
Number Theory
Use these vocabulary cards with the EL Support Lesson: Conversations About Prime and Composite Numbers.
Worksheet
Vocabulary Cards: Conversations About Prime and Composite Numbers
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.
Fourth Grade
Number Theory
Worksheet
Prime, Composite, and Factoring Fun
Prime, Composite, and Factoring Fun
Worksheet
Prime, Composite, and Factoring Fun large image
Prime, Composite, and Factoring Fun
Fourth Grade
Number Theory
Practice identifying factors with this beach-themed worksheet for fourth graders!
Worksheet
Prime, Composite, and Factoring Fun
Prime, Composite, and Factoring Fun
Worksheet
Prime, Composite, and Factoring Fun
Practice identifying factors with this beach-themed worksheet for fourth graders!
Fourth Grade
Number Theory
Worksheet
Rainbow Factors #2
Rainbow Factors #2
Worksheet
Rainbow Factors #2 large image
Rainbow Factors #2
Fourth Grade
Number Theory
Practice with prime and composite numbers in this colorful fourth-grade worksheet!
Worksheet
Rainbow Factors #2
Rainbow Factors #2
Worksheet
Rainbow Factors #2
Practice with prime and composite numbers in this colorful fourth-grade worksheet!
Fourth Grade
Number Theory
Worksheet
It's a Maze of Hexagons!
It's a Maze of Hexagons!
Worksheet
It's a Maze of Hexagons! large image
It's a Maze of Hexagons!
Fourth Grade
Number Theory
Students practice identifying prime numbers, regular polygons, and irregular polygons!
Worksheet
It's a Maze of Hexagons!
It's a Maze of Hexagons!
Worksheet
It's a Maze of Hexagons!
Students practice identifying prime numbers, regular polygons, and irregular polygons!
Fourth Grade
Number Theory
Worksheet
Matching Factor Tree Cards
Matching Factor Tree Cards
Worksheet
Matching Factor Tree Cards large image
Matching Factor Tree Cards
Fourth Grade
Number Theory
Students will match a product to its factor tree and list of prime factors in this interactive activity.
Worksheet
Matching Factor Tree Cards
Matching Factor Tree Cards
Worksheet
Matching Factor Tree Cards
Students will match a product to its factor tree and list of prime factors in this interactive activity.
Fourth Grade
Number Theory
Worksheet
Math Mixed Review Part 1: Flying Through Fourth Grade
Math Mixed Review Part 1: Flying Through Fourth Grade
Worksheet
Math Mixed Review Part 1: Flying Through Fourth Grade large image
Math Mixed Review Part 1: Flying Through Fourth Grade
Fourth Grade
Mixed Operations
From multi-digit subtraction to identifying prime numbers, assess each student’s mastery of a variety of fourth-grade math skills.
Worksheet
Math Mixed Review Part 1: Flying Through Fourth Grade
Math Mixed Review Part 1: Flying Through Fourth Grade
Worksheet
Math Mixed Review Part 1: Flying Through Fourth Grade
From multi-digit subtraction to identifying prime numbers, assess each student’s mastery of a variety of fourth-grade math skills.
Fourth Grade
Mixed Operations
Worksheet
More Amaz-ing Hexagons!
More Amaz-ing Hexagons!
Worksheet
More Amaz-ing Hexagons! large image
More Amaz-ing Hexagons!
Fourth Grade
Number Theory
This multi-part worksheet helps students practice identifying the differences between regular and irregular hexagons while also reviewing their knowledge of composite and prime numbers.
Worksheet
More Amaz-ing Hexagons!
More Amaz-ing Hexagons!
Worksheet
More Amaz-ing Hexagons!
This multi-part worksheet helps students practice identifying the differences between regular and irregular hexagons while also reviewing their knowledge of composite and prime numbers.
Fourth Grade
Number Theory
Worksheet
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