'Year old' in the Bible

And he said to him, "Take for me a three-year-old heifer, and a three-year-old female goat, and a three-year-old ram, and a turtledove and a young pigeon."

"And this is what you shall offer on the altar: Two {one-year-old} male lambs {every day} continually.

and as a sacrifice of the fellowship offering, two cattle, five rams, five he-goats, and five male lambs {a year old}. This [was] the offering of Nahshon son of Amminadab.

All of the people of Judah took sixteen-year-old Azariah and made him king in place of this father Amaziah.

With what shall I approach Yahweh, and bow down to God on high? Shall I approach him with burnt offerings, with bull calves a year old?