Here is the following conversation I just overheard while Tim was in the kitchen and Michael was watching the Bulls/Celtics game and keeping Tim updated.
Michael: "The Bulls are winning by 2!"
Tim: "Why? How much do they have?"
Michael: "one hundred one"
Tim: "And how much do the Celtics have?"
Tim: "Yup, they're winning by 2 alright!"
How is that for number knowledge for a 3 year old?!