KJV: In the fifteenth year of Amaziah the son of Joash king of Judah Jeroboam the son of Joash king of Israel began to reign in Samaria, and reigned forty and one years.
NASB: In the fifteenth year of Amaziah the son of Joash king of Judah, Jeroboam the son of Joash king of Israel became king in Samaria, and reigned forty-one years.
KJV: Sixteen years old was he when he began to reign, and he reigned two and fifty years in Jerusalem. And his mother's name was Jecholiah of Jerusalem.
NASB: He was sixteen years old when he became king, and he reigned fifty-two years in Jerusalem; and his mother's name was Jecoliah of Jerusalem.