The unit fraction 1/4, also called one-fourth.
1/4 is a rational number with terminating decimal expansion 0.25.
Quarter
See also
Half, Köbe's One-Fourth Theorem, QuartileExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Quarter." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Quarter.html