Math

posted by Math Mom

Thanks Ms. Sue for givig me the anser of 11,211 for my son's math problem(I have 10 thousands, 11 tens, 12 hundreds, and 0 ones. What number am I?) However, I am still confused and need a little more clarification? I understand place value order.

If there are 0 ones, why is there a 1 in the ones place? Isn't that 1 ten which is 10 not 11 (1 ten plus 1 )?
If there are 11 tens, why is there a 1 in the tens place? Where did the remaining value of the tens "go"?


Thank you again

  1. Steve

    Hmmm. I get
    10000 + 110 + 1200 + 0 = 11310

    as for the 1 in the 10's place, the place can only hold a single digit. 11 10's = 110, so a carry has to go over to the hundreds place.

    Must have been a typo. Ms Sue is usually quite reliable, but at least you checked your answer. Sounds like you knew how to do it anyway.

  2. Math Mom

    Thank you Steve.

    Your answer is the same that I calculated before I posted my question. My son's teacher gave them the incorrect answer. I am a teacher as well & I wanted another opinion.

    Thanks !!! :)

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