Well, considering he WROTE the questions, that seems a stretch. Besides, the way the magic number 1000 has been bandied about by his peers, it also seems a stretch that he would have gotten it wrong.
Yes, he wrote the questions. But when you're reading them aloud from paper, it's not hard to see how he made a simple mistake. He also noticed his mistake right away, so he didn't "get it wrong". It sounded like a simple misstatement that was corrected immediately after it came out of his mouth, so I don't get what the big deal is.
NewsMax is trying to stretch this and say that he "claimed over 10,000 soldiers died", when he said "10,052 - excuse me, 1,052." I noticed the mistake, but thought nothing of it. It happens.