Cognitive Overload: The Real Culprit
This common mistake is explained by a known phenomenon: cognitive overload. When information repeats (like 1000 here), the brain tries to simplify to be faster. It groups large numbers, minimizes small ones, and sometimes fills gaps too generously.
The tens (40, 30, 20, 10) are perceived as secondary, although they sum up to a specific amount: 100. But in haste, the mind rounds off without checking.
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