Bertrum, my come-uppance came the other way around.
We were in the car, my (just under) 4 yr old behind me, her sis opposite. We had been to their once a weekly Maccie-Ds. I do believe in a certain amount of rote to times-tables and was questioning older sister.
At one point, "What's 7 times 5?"
To my astonishment, a little voice from behind me said, "Dad, that is 35 and it's seven groups of five." I hadn't even used that logic with the elder one - she had the blooming logic tied around and a great way to teach it.
Suffice to say, a 'natural' and she is now studying post A level maths today and she ain't even 13 yet....(not in this country)