They could be: 350, 360, 370, 380 and 390 rounded to the nearest
1000
1804
599950
They are 599950 and 600050.
390
390
They could be: 350, 360, 370, 380 and 390 rounded to the nearest
390
390
1000
1804
7000
600
549 and 450 rounded off the nearest hundred is 500
86 rounds to 100
Since 839 is less than 850, round it off to 800.