I won't read your answer first, and I won't read the answers of other netizens. How to analyze and answer this question.

Approximation: 60 0000 First analysis: After a certain number is rounded, the approximate value is 600000.

Explain that the rounded number must be' ten thousand digits'. Therefore,

At least six digits: 550000.

Up to six digits: 649999

If this question is changed to: the approximate figure is 600,000 (note: the unit of' ten thousand' is included at this time), then the number of' rounding' digits to be considered must be' thousand'.

So, the maximum six digits: 604999.

At least six digits: 595000

Does the landlord understand?

The key to your question is to see if there is' 10,000' in this approximate figure of 600,000. If not, it must be 649,999;

If it is: 600,000, it must be 604,999.