4.5 already is rounded to the nearest half.
45 cents
It is: 50
4/5 to the nearest half is 1.
It is 2.5
Yes, if you are rounding to the nearest ten. No, if you are rounding to the nearest whole number.
45 cents
It is: 50
To the nearest half, one half
1,500,000 is already rounded to the nearest half-million.
4/5 to the nearest half is 1.
It is 2.5
5.5
53
6.5
The hundred that's nearest to 45 is zero. 45 is only 45 away from that one. The next one ... 100 ... is 55 away.
38.412 rounded to the nearest half is 38.5
Up.