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Which of these examples is an error of addition by one?

A. [tex]2683+6215=8898[/tex]
B. [tex]3415+2174=5589[/tex]
C. [tex]7363+1535=8798[/tex]
D. [tex]5167+4622=9789[/tex]

Sagot :

GinnyAnswer
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.
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