If someone asks you

Tell me the next number (add one) after the number
one million two hundred thirty-one thousand ninety-nine,

do you known if it is a common error that the first number that comes to mind, their answer, is "one million two hundred thirty-two thousand"?

In general, do you know any document or reference for usual errors when counting numbers? All references I've found are not applicable to numbers greater than ten.

  • 2
    $\begingroup$ When I was young, a common trick was to ask "What is 1000, plus 1000, plus 20, plus 20, plus 20, plus 20, plus 10, plus 10?" with some answering "3000." $\endgroup$
    – JRN
    Feb 6, 2018 at 2:23
  • 2
    $\begingroup$ Is that called “miscarrying a 1?” $\endgroup$ Feb 6, 2018 at 4:05
  • 1
    $\begingroup$ I saw a version of that trick with a prepared prop: the numbers were printed on a card, and were uncovered one at a time by the person trying to trick you. You were asked to keep a running total. It went 10, 1000, 20, 1000, 30, 1000, 40, and almost everybody says 4000 at the end $\endgroup$
    – user5114
    Feb 6, 2018 at 14:33
  • $\begingroup$ 231,100 one million two hundred thirty-one thousand one hundred $\endgroup$ Feb 8, 2018 at 1:58


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