Originally Posted by CrimsonWife
My DD is the same way- she *CAN* use the mental math strategies but she much prefers pencil & paper calculation. I don't sweat it.

Ditto with my dd, who is using Singapore Math. I decided that I can't "make" her do math any other way than the way she wants to (as long as she understands). It's not worth the frustration, imo. I will still teach her the SM way but I'm not going to sweat it either.