When I was in kindergarten, I used to do math booklets at home with my mom for fun. I learned basic multiplication sometime around then. 13 years later I majore

When I was in kindergarten, I used to do math booklets at home with my mom for fun. I learned basic multiplication sometime around then. 13 years later I majored in engineering. So I'm not saying it can't be done by any 5 year olds, but it seems young to teach this to the majority of 5 year olds.