Números 28:13

¹³ y una décima de flor de harina amasada con aceite, en ofrenda por presente con cada cordero; holocausto de olor grato, ofrenda encendida al SEÑOR.

Two and a half

In Exodus 25:10, this signifies much and full; when predicated of the Divine it signifies all. Its meaning is similar to that of five and ten.