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

Darko did not regroup correctly after adding the ones digits.

Answer 1

Darko's incorrect sum of 324 and 57 being 894 suggests he made an error in the addition process. The correct sum of 324 and 57 is 381 (324 + 57 = 381).

Let's analyze the provided options:

1. Darko did not align the digits by their place value when he set up the problem. - This could lead to an error but typically doesn't result in a sum that is this far off.

2. Darko added 324 and 75 by mistake. - This does not apply since 75 is not involved in the problem as stated.

3. Darko multiplied the numbers instead of adding them. - This would not yield a sum like 894 since the product of these two numbers (324 * 57) is much larger than 894.

4. Darko did not regroup correctly after adding the ones digits. - This is a likely error. When adding the ones digits, 4 + 7 = 11, which should cause a carry into the next column.

Given the options and the nature of the error, the most reasonable conclusion is:

Darko did not regroup correctly after adding the ones digits.

Answer 2

are you sure

Answer 3

Let’s go through the addition of 324 and 57 step-by-step to verify the possible error.

1. Align the numbers by place value:

  324
+  57
_____

2. Add the ones place:
   • 4 (from 324) + 7 (from 57) = 11
   • Write down 1 and carry over 1 to the next column.

  324
+  57
_____
   1  (carry over 1)

3. Add the tens place (including the carry):
   • 2 (from 324) + 5 (from 57) + 1 (carry) = 8

  324
+  57
_____
  81

4. Add the hundreds place:
   • 3 (from 324) + 0 = 3

  324
+  57
_____
  381

The correct sum is 381, which means Darko's error was most likely due to incorrect regrouping in the addition process that led him to the wrong total of 894.

Thus, my previous assessment stands: Darko did not regroup correctly after adding the ones digits.

If you have any further questions or clarity needed, feel free to ask!