TPS: Commas

Parker typed out all the numbers from 1-100 and then 100-200 by tens on the computer the other day and then printed it out.

Then he came to me and said, "You see the commas?"

Sure enough, there were commas between 11 and 12, 22 and 23, 33 and 34, 44 and 45, 55 and 56, 66 and 67, 77, and 78, 88 and 89, 89 and 90, 99 and 100.

I'm sure you've figured out why they are there, but it took me a minute looking at the big page of numbers. Oh, and the one between 99 and 100 is just a mistake.