5th Grade · Number & Operations—Fractions

Unit Fraction

5.NF.B.7a

Definition

A fraction with a numerator of 1, representing a single equal part of a whole.

Examples

  • 1/4 is a unit fraction — one part out of four.
  • 1/6 is a unit fraction — one part out of six.

Key rule

A unit fraction always has 1 as its numerator.

Memory hook

One part, one whole — a single unit.