42 instead of 24 -> name of the mistake?

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Lun-14

Banned
Hindi
Hi,

Today, I asked my student to solve this: 12+36-12-12=?, he mistakenly wrote this answer: 42,
But the correct answer is: 24

What do you call this sort of mistake (where there is just place is interchanged)? Is this a typo? No, I think it isn't.

Thanks!
 
  • Vovan

    Senior Member
    Russian
    If it is not a "typo", then what is being meant?:confused: A manifestation of dyslexic dysgraphia?

    Well then, googling shows that "(letter/number) reversals" (as a type of "spelling mistakes") can be used as a name.
    An example from the Internet: "Eliminating Reversals - Your Kid Can Read".
     
    Last edited:

    Glenfarclas

    Senior Member
    English (American)
    If it is not a "typo", then what is being meant?:confused: A manifestation of dyslexic dysgraphia?

    Well then, googling shows that "(letter/number) reversals" (as a type of "spelling mistakes") can be used as a name.
    An example from the Internet: "Eliminating Reversals - Your Kid Can Read".
    It certainly seems like the student may suffer from dyslexia.
     

    exgerman

    Senior Member
    NYC
    English but my first language was German
    Does the student's native language count numbers like "four-and-twenty" instead of "twenty-four"? This sort of transposition error is common in speakers of languages, like German, which count that way.
     
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