6th Grade · The Number System
Common Factor
6.NS.B.4
Definition
A number that is a factor of two or more numbers.
Examples
- 12 and 18 share the common factors 1, 2, 3, and 6.
- Common factors are used to simplify fractions.
Key rule
A common factor divides evenly into every number in the group.
Memory hook
A factor shared by more than one number.