To determine which of these examples contains an error of addition by one, let's examine each case step by step. We’ll need to compare the addition results to the given outcomes:
1. Example A:
- Given addition: [tex]\( 2683 + 6215 \)[/tex]
- Result: 8898
- Comparison: The addition result is supposed to match the given result exactly.
2. Example B:
- Given addition: [tex]\( 3415 + 2174 \)[/tex]
- Result: 5589
- Comparison: The addition result is supposed to match the given result exactly.
3. Example C:
- Given addition: [tex]\( 7363 + 1535 \)[/tex]
- Result: 8898
- Given: 8798
- Comparison: Here, the calculated result (8898) differs from the given result (8798) by exactly 100 units, not 1 unit.
4. Example D:
- Given addition: [tex]\( 5167 + 4622 \)[/tex]
- Result: 9789
- Comparison: The addition result is supposed to match the given result exactly.
From this analysis, we find:
- Example A's result is correct.
- Example B's result is correct.
- Example C's result is incorrect and does not match by an error of one.
- Example D's result is correct.
Therefore, there are no examples listed with an error of addition by one. However, Example C stands out as an incorrect sum, but the discrepancy is by more than one unit.
In conclusion, none of the options listed is a result of an error in addition by exactly one unit.
