Answer:
99,999+ 999,999= 1,099,998
Step-by-step explanation: The highest they cold get would end with a 9 becuase they can't go to a 10 or else it wold add another digit which would not work
199,999
Add the biggest 5 digit number and the smallest 6 digit number.
99,999 + 100,000 = 199,999
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