Subjects

Math

English Language Arts

Science

Social Studies

Foreign Language

Grades

Pre-K

Kindergarten

1st Grade

2nd Grade

3rd Grade

4th Grade

5th Grade

6th Grade

7th Grade

8th Grade

Worksheets

Games

Build a Worksheet

Word Scramble

Word Search

Crossword Puzzle

Sudoku Generator

Addition Worksheet Generator 

Subtraction Worksheet Generator

Multiplication Worksheet Generator

Division Worksheet Generator

See All

More Resources

Arts & Crafts

Hands-On Activities

CVC Words

Guided Lessons

Common Core State Standards

Common Core Math

Common Core ELA

Roly Recommends

Weekly Recommendations

Early Childhood

Social Emotional Learning

Father's Day

Summer

Summer Boost

3rd - 6th Grade Common Core Number Theory Resources

From multi-digit subtraction to identifying prime numbers, assess each student&rsquo;s mastery of a variety of fourth-grade math skills.

Math Mixed Review Part 1: Flying Through Fourth Grade

Practice rewriting expressions as products using the distributive property of multiplication in this sixth-grade math worksheet.

Factor Using the Distributive Property

Find factor pairs of two-digit numbers with this fourth-grade math worksheet!

Find the Factors

Use this number theory worksheet to practice finding the greatest common factor of two numbers by finding the prime factorization!&nbsp;

Find the Greatest Common Factor By Prime Factorization #1

Students familiarize themselves with pre-algebra concepts and vocabulary — including factors, base numbers, exponents, variables, and value — in this introductory overview. This workbook offers plenty of hands-on practice so that students can gain confide

Power Play: Exponents and Equations

Have your fourth graders work through multiplication problems by learning about factors and why they are important for problem solving.

Find the Factors of Prime and Composite Numbers

Give your learners practice finding the greatest common factor (GCF) and the least common multiple (LCM) with this fun code-breaking worksheet!

GCF and LCM: Crack the Code

Students practice identifying prime numbers, regular polygons, and irregular polygons!

It's a Maze of Hexagons!

Students build their number sense as they practice finding the least common multiple of whole numbers in this math worksheet!&nbsp;

Least Common Multiple: Part 1

Teach your students to use factor rainbows to find the greatest common factor of two given numbers.

Greatest Common Factor

Become a GCF master with this math worksheet! Practice finding the greatest common factor of 2 or 3 numbers ranging all the way up to 100.

Practice Finding the Greatest Common Factor

Boost your learner's understanding of number theory and prime and composite numbers with this sixth-grade math worksheet all about factorization!

Prime Factorization

Grow students&rsquo; math skills with more practice finding the greatest common factor by using factor trees to find the prime factorization.

Find the Greatest Common Factor By Prime Factorization #2

With this worksheet, your child will be learning about factors, and they'll be getting multiplication practice as they go.

Finding Factors

Find the greatest common factor (GCF) using the&nbsp;prime factorization method with this sixth-grade practice worksheet!

Find the Greatest Common Factor By Prime Factorization #3

Give your students practice finding the greatest common factor (GCF) with this fun code-breaking worksheet!

GCF: Crack the Code

Help students build their number sense as they practice finding the least common multiple (LCM) in this helpful practice worksheet.

Least Common Multiple: Part 3

Give your students practice finding the least common multiple (LCM) with this fun code-breaking worksheet!

LCM: Crack the Code

Students practice solving a variety of equations, then determine if the answer is a prime number.

Which Numbers Are Prime?

Children practice identifying factors with the help of a factor tree in this multiplication worksheet.

Factor Tree

Become the greatest at finding the greatest common factor with this matching game! 

Match: Greatest Common Factor

Students continue to hone their understanding of how to find the least common multiple in this math practice worksheet!&nbsp;

Least Common Multiple: Part 2

Build number sense skills while practicing finding the least common multiple in this matching game!

Match: Least Common Multiple

Integrate the standard algorithm with place value ideas in this worksheet about division.

Division: Listing Multiples

Players navigate rivers and streets while demonstrating their knowledge of factors and multiples.

Jumpy: Find the Multiples

Students build their number sense as they practice finding the least common multiple of whole numbers in this two-page math worksheet.

Practice Finding the Least Common Multiple

Give students practice identifying prime numbers with this fun this maze activity!

Identifying Prime Numbers Maze

Does your child know the difference between a prime number and a composite number? Help them learn the difference with this simple worksheet.

Prime Numbers vs Composite Numbers

Hone mental math skills and boost knowledge of factors and multiples in this skateboarding adventure.

Dino Skateboarding: Find the Factors

Students build their number sense by finding&nbsp;the multiples of whole numbers in this fourth-grade math worksheet!

Find the Multiples

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Grade Level

3rd - 6th Grade

Common Core

Lesson Plans

Interactive Worksheets

Workbooks

Activities

Exercises

Stories

Songs

Offline Games

Science Projects

Teacher Resources

Resource Type

Birthdays

Women's History Month

St. Patrick's Day

Ramadan

Passover

Spring

Easter

Earth Day

Cinco de Mayo

Mother's Day

Memorial Day

Asian Pacific American Heritage Month

Graduation

Independence Day

Back to School

Labor Day

Fall

Hispanic Heritage Month

Halloween

Dia de los Muertos

Veterans Day

Winter

Holidays

Thanksgiving

Christmas

Hanukkah

Kwanzaa

New Year

Martin Luther King Jr. Day

Lunar New Year

Valentine's Day

Presidents' Day

Black History Month

Occasion

What's New

Mazes

Dot to Dot

Ball Games

Crossword

Fitness & Exercise

Group Games

Memory Games

Outdoor Games

Printable Board Games

Puzzles & Sudoku

Scavenger Hunt

Travel Games

Word Puzzles

Game Type

Fabric Projects

Beads & Jewelry

Paper & Glue Crafts

Construction & Sculpture

Painting & Drawing

Recycled Crafts

Coloring

Snacks

Mains

Sides

Dessert

Recipes

English Language Support

3rd - 6th Grade Common Core Number Theory Resources

Common Core Quick Links: