LENO: Here's Samantha from Colorado: "When you help your daughters with their homework, is there a a subject you struggle with?"
PRESIDENT OBAMA: Well, the math stuff I was fine with up until about seventh grade.
LENO: Yeah.
PRESIDENT OBAMA: But Malia is now a freshman in high school and -- I'm pretty lost.
LENO: Yeah.
PRESIDENT OBAMA: Fortunately, they're great students on their own. and, you know, if something doesn't work, I'll call over to the Department of Energy and see if they have a physicist to come over.