Quoting_commentary for Numbers 29:4

וְעִשָּׂר֣וֹן אֶחָ֔ד לַכֶּ֖בֶשׂ הָאֶחָ֑ד לְשִׁבְעַ֖ת הַכְּבָשִֽׂים׃

and one tenth part for every lamb of the seven lambs;