Thanks for your very interesting replies. LOVE the math humor! Sorry for my bad "threadiquet" in not replying sooner. (I got distracted by a major school issue yesterday followed by a hot water heater leaking through the ceiling. I guess when it rains, it "pours"!).

DH always says things like he'll be home at approximately 5:03 - I guess I'm living with 2 of them!

Her teacher thinks that she has been slower to take off on reading than her sister because she loves math and English reading often doesn't fit into nice patterns and rules. She doesn't do large addition in her head, but analyzes everything. No middle letter in the alphabet, facts about piano keys, etc. Her favorite Christmas present was a calculator. Her endless curiosity is exhausting. I don't remember that with her sister.