Who knows what is accurate in mathematics? For example, is 8 thousand as accurate as 8 thousand? Is the accuracy of 2.5 multiplied by the fourth power of ten the same as that of 25000?

Accuracy reflects the error of approximation. The accuracy of approximation is the counting unit of the last digit reserved.

The accuracy of 8 thousand is 1 thousand, and its error is large. The accuracy of 8000 is 1, and the error is small.

The accuracy of multiplying 2.5 by the fourth power of 10 is different from that of 25000. The precision of multiplying 2.5 by the fourth power of ten is thousands, while the precision of 25000 is 1.

The accuracy of 30,300,3000 is 1.

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