On page 188, (hard cover) the Mathemagician writes down an equation that reads:

"4+9-2x16+1/3x6-67+8x2-3+26-1/34+3/7+2-5="

(/=division.) Then Milo says the equation equals 0 and the Mathemagician agrees. But, when you actually solve the equation using the order of operations it comes to about -47. (and some random numbers). Well, i thought the Mathemagician was the "all-knower" of math, why is the answer to the equation not what the Mathemagician says? Hmm...