'Thousand' in the Bible

But those that had eaten were about five thousand men, besides women and children.

but they that ate were four thousand men, besides women and children.

Do ye not yet understand nor remember the five loaves of the five thousand, and how many hand-baskets ye took up?

nor the seven loaves of the four thousand, and how many baskets ye took up?

And having begun to reckon, one debtor of ten thousand talents was brought to him.