John Gill Commentary Ezra 10:44

"All these had taken foreign wives; and some of them had wives by whom they had children." — Ezra 10:44 (ASV)

All these had taken strange wives
In all about one hundred and thirteen:

and some of them had wives by whom they had children ;
and yet they put them away, which made it the more difficult for them to do; and those that had none, it is thought to be a mark of God's displeasure at such marriages.

No mention being made of the children being put away, as Shechaniah proposed, (Ezra 10:3) , it may be concluded they were not, but were taken care of, to be educated in the true religion, and entered proselytes at a proper time; and the rather, as Ezra gave no orders about their putting away, (Ezra 10:11) .