This is due to a phenomenon called cognitive overload . Our brain, when trying to simplify, instinctively groups together large numbers ( the 1000s ) and then adds up the small numbers too quickly. The result: a common mistake, leading to overconfidence and overly rapid mental processing.
How to avoid cognitive traps?
To get around these errors, here are some tips:
-
Break down the calculations
Rather than trying to solve everything at once, take it step by step:
- 1000 + 40 = 1040
- 1040 + 1000 = 2040, and so on.
By isolating each addition , you reduce the risk of error and maintain complete control over the process.
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Take your time
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