Unit fraction

A unit fraction is a fraction with 1 on top, like 1/2, 1/3, or 1/10. It is one equal part of a whole.

Unit fractions build every other fraction: 3/4 is three copies of 1/4. When a volume has an edge that is not a whole number, the box is packed with cubes whose edge is the unit fraction that fits, such as 1/2.