0-4.99r is the lower unit, 5-9.99r is the higher unit.
Sometimes it is advantageous to express a value in round numbers. To round to a particular place, look at the digit immediately to the right of the one you want to round to. If that digit is 4, 3, 2, 1 or 0, zero it and everything to the right of it out. If that digit is 5, 6, 7, 8 or 9, increase your target digit by one and zero everything to the right of it out.
Units is another name for ones, so look at the tenths place.
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42.1 rounded to the nearest unit or nearest one is 42.
6,453,321.9648 rounded to the nearest unit or whole number is 6,453,322
Could round to 4.6 or 5.0
4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.
anwser=$139.00