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

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.

Learners practice determining factors of prime and composite numbers with this fourth-grade math worksheet!

Take a deep dive into prime and composite numbers to 20 with this exploratory worksheet!

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