2 Bible Verses about Fractions, One Tenth

For this Melchisedec, king of Salem, priest of the most high God, who met Abraham as he returned from the slaughter of the kings and blessed him, to whom also Abraham gave a tenth of all, first being interpreted king of righteousness, and then also king of Salem, which is king of peace, without father, without mother, without genealogy, having neither a beginning of days nor end of life, but being made like the Son of God, continues a priest forever.read more.
And behold, how great this man was, to whom even Abraham the patriarch gave a tenth of the spoils. And the sons of Levi who receive the priesthood, have a commandment to tithe the people according to the law, that is their brothers, although descended from Abraham; but he whose descent is not reckoned from them received tithes of Abraham, and blessed him who has the promises. But beyond all contradiction, the less is blessed by the greater. And here, men who die receive tithes, but there, one of whom it is testified that he lives. And so to speak, Levi also who receives tithes paid tithes through Abraham; for he was yet in his father when Melchisedec met him.

Woe to you scribes and Pharisees, hypocrites! For you tithe mint, and anise, and cummin, and have neglected the weightier matters of the law, justice, mercy, and faith. These you ought to do, and not neglect the others.