'One tenth' in the Bible
the man shall then bring his wife to the priest, and shall bring as an offering for her one-tenth of an ephah of barley meal; he shall not pour oil on it nor put frankincense on it, for it is a grain offering of jealousy, a grain offering of memorial, a reminder of iniquity.
The one who presents his offering shall present to the Lord a grain offering of one-tenth of an ephah of fine flour mixed with one-fourth of a hin of oil,
with one-tenth of an ephah of finely ground flour as a grain offering mixed with one quarter of a hin of pressed olive oil.
and one-tenth of an ephah of finely ground flour mixed with olive oil as a grain offering for each lamb, as a burnt offering for a pleasing aroma, an offering made by fire to the Lord.
For each of the seven lambs you are to offer one-tenth of an ephah,
with one-tenth for each of the seven lambs,
and one-tenth deal for the one lamb, for the seven lambs;
and one-tenth for each of the seven lambs,