4th and 5th Grade Common Core Number Theory Interactive Worksheets

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

Become the prime expert of prime numbers with this engaging maze!

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

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

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.

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

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

One way to tackle division is to turn it into multiplication. In this exercise, read the division question — then ask yourself a multiplication question!

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

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

Introduce your child to factor trees with this simple algebra worksheet.