Darko found the sum of 324 and 57 to be 894. What error did he make?

Question

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(1 point)
Responses

Darko multiplied the numbers instead of adding them.
Darko multiplied the numbers instead of adding them.

Darko did not align the digits by their place value when he set up the problem.
Darko did not align the digits by their place value when he set up the problem.

Darko added 324 and 75 by mistake.
Darko added 324 and 75 by mistake.

Darko did not regroup correctly after adding the ones digits.

Answer 1

Darko's error likely occurred because "the sum of 324 and 57 is not 894." To analyze the options:

1. Darko multiplied the numbers instead of adding them. - This is unlikely since multiplying those numbers would yield a different product, and the mistake is in the addition.

2. Darko did not align the digits by their place value when he set up the problem. - This could lead to an incorrect total, but it seems more probable that the error would come from a misunderstanding of addition rather than misalignment.

3. Darko added 324 and 75 by mistake. - This doesn't explain the given sum, since 324 + 75 does not equal 894 either.

4. Darko did not regroup correctly after adding the ones digits. - This option seems most plausible. If he did not carry over correctly after adding the ones and tens, it could lead him to arrive at an incorrect total.

Therefore, Darko likely did not regroup correctly after adding the ones digits.