# Search Printable 5th Grade Number Theory Worksheets

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Number Theory
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Division: Factor Fun
Worksheet
Division: Factor Fun
One way to tackle division is to turn it into multiplication. In this exercise, read the division question — then ask yourself a multiplication question!
Math
Worksheet
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.
Math
Worksheet
Least Common Multiple: Part 1
Worksheet
Least Common Multiple: Part 1
Students build their number sense as they practice finding the least common multiple of whole numbers in this math worksheet!
Math
Worksheet
Find the Greatest Common Factor By Prime Factorization #2
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.
Math
Worksheet
Least Common Multiple: Part 3
Worksheet
Least Common Multiple: Part 3
Help students build their number sense as they practice finding the least common multiple (LCM) in this helpful practice worksheet.
Math
Worksheet
Least Common Multiple: Part 2
Worksheet
Least Common Multiple: Part 2
Students continue to hone their understanding of how to find the least common multiple in this math practice worksheet!
Math
Worksheet
Find the Greatest Common Factor By Prime Factorization #3
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!
Math
Worksheet
Division: Listing Multiples
Worksheet
Division: Listing Multiples
Integrate the standard algorithm with place value ideas in this worksheet about division.
Math
Worksheet
Glossary: Doubling Multiples for Division
Worksheet
Glossary: Doubling Multiples for Division
Use this glossary with the EL Support Lesson: Doubling Multiples for Division.