“Those who were taught new math are, in fact, innumerate.”
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Innumerate, that is the word I was trying to remember a while back, I read a whole essay about it once. If I see some obvious glaring error such as 6 times 45 equals 830 I know in an instant that is wrong. It takes a second longer to mentally calculate the correct answer of 270 but someone who is innumerate is likely to accept the 830 without question.
There is a book entitled “Innumeracy”.
(I think I *spelled* that correctly.)
:-)