The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1".
In this case the first figure to be discarded is 3 therefore the previous figure (2) remains unchanged.
239 rounded to the nearest 100 is 200.
240
512 two the nearest 100
It is 500.
It is: 32,468,000
200
round 90 to the nearest ten
372 rounded to the nearest hundred is 400
300
2,222 rounded to the nearest 100 is 2,200.
100
100
100
10100