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

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

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

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

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

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

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

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

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

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

Think about the importance of determining the factors of a product.

Use this glossary with the EL Support Lesson: Multiples and Skip Counting.

Students will match a product to its factor tree and list of prime factors in this interactive activity.

This worksheet gives students practice identifying multiples of a number.

Use this glossary with the EL Support Lesson: Factor Friend or Foe?

Use this glossary with the EL Support Lesson: The Factor Tree Strategy.

Use these vocabulary cards with the EL Support Lesson: The Factor Tree Strategy.

Use these vocabulary cards with the EL Support Lesson: Factor Friend or Foe?

Use these vocabulary cards with the EL Support Lesson: Multiples and Skip Counting.

Use these vocabulary cards with the EL Support Lesson: Doubling Multiples for Division.

Use this glossary with the EL Support Lesson: Doubling Multiples for Division.

What treasure will you find at the end of these rainbows? Factor pairs, of course!