Houdin is working on his multiplication tables today. He's trying to memorize his 9s. I gave him the little trick that every product of 9x any single digit will have a sum of nine when added together. He thought that was pretty cool. Now he's working on a 9x time trial. His first effort gave him three wrong and it took him over three minutes.
Pop quiz:
Do you have all of your multiplication table memorized?
How old are you?
How fast can you recite your nines?
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