Question

Darko found the sum of 324 and 57 to be 894. What error did he make? NOTE: There is a check answer button in the bottom right corner. Click this to check your answer before moving on to the next question. It will not tell you the correct answer, but it will tell you if the answer you selected is correct. You can use this feature once per question.(1 point)ResponsesDarko added 324 and 75 by mistake.Darko added 324 and 75 by mistake.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 did not regroup correctly after adding the ones digits.Darko did not regroup correctly after adding the ones digits.Darko multiplied the numbers instead of adding them.

Answer 1

To determine what error Darko made when calculating the sum of 324 and 57, we first need to perform the addition correctly:

  324
+  57
 ------
  381

Now, let's evaluate the options provided:

1. Darko added 324 and 75 by mistake. - This is incorrect because the numbers he was supposed to add are 324 and 57, not 75.

2. Darko did not align the digits by their place value when he set up the problem. - This is a possible explanation since incorrect alignment could lead to misunderstanding the addition.

3. Darko did not regroup correctly after adding the ones digits. - This explanation is valid too as he could have miscalculated or ignored carrying over the numbers when summing the digits.

4. Darko multiplied the numbers instead of adding them. - This is incorrect since the resulting number he provided does not imply a multiplication scenario.

Since the mistake resulted in a sum of 894, which is significantly higher than the actual sum, it's most likely related to misalignment or a regrouping error. The most accurate conclusion would be:

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

Thus, the best choice would be the second option.