When the number you're going to round is exactly between the lower and the bigger number, you always round up. It can't be explained. It's just how it is.
297.8 square kilometres. Now here is a minor digression that you may (or may not) find is of interest: There are different views on how the digit 5 should be rounded - up or down. 1,2,3 and 4 are always rounded down; 6,7,8 and 9 are always rounded up and 0 does not need rounding. So if you always round 5 down, you will round down 5 numbers and up 4 and so introduce a downward bias in your work. Conversely, if you always round up you will introduce an upward bias. You could randomly decide to round up or down but this makes it more difficult for others to follow what you have done. The recommended answer is to round 5 so that the previous digit is EVEN. Thus 0.15 is rounded up to 0.2 and 0.45 is rounded down to 0.4
When the digit immediately to the right of it is 0-4 round down. If it is 5-9 round up.
64.000
120005 Some people will argue that 5 should always be rounded up. That is wrong since it introduces an upward bias. If you follow these rules: 0 no rounding required. 1,2,3,4 round down 5,6,7,8,9 round up A random set of numbers will end equally in any one of the digits. You are round up 5 times out of ten and rounding donw only 4 out of ten. This introduces a bias. The solution is to round 5s up or down to an even digit. Then 1 out of ten does not require rounding, 4 out of ten are always rounded down, 4 out of ten always rounded up, and one is rounded up or down with equal probability. Result? Expected bias = 0.
They are always rounding things up!
The nearest 100th is 800. You should round down not up. If you want to round up it would be 900.
27.7 (you always round up if the last number is above 5)
When the number you're going to round is exactly between the lower and the bigger number, you always round up. It can't be explained. It's just how it is.
297.8 square kilometres. Now here is a minor digression that you may (or may not) find is of interest: There are different views on how the digit 5 should be rounded - up or down. 1,2,3 and 4 are always rounded down; 6,7,8 and 9 are always rounded up and 0 does not need rounding. So if you always round 5 down, you will round down 5 numbers and up 4 and so introduce a downward bias in your work. Conversely, if you always round up you will introduce an upward bias. You could randomly decide to round up or down but this makes it more difficult for others to follow what you have done. The recommended answer is to round 5 so that the previous digit is EVEN. Thus 0.15 is rounded up to 0.2 and 0.45 is rounded down to 0.4
A pea jumping
round tu 2 digits aft desimal point
There is always another opportunity round the corner. Better a has-been than a never-was, better a never-was than a never- tried-to-be
Always look at the next digit to the right of where you want to round up or down to. If the next digit is 5 or more, you round up. If it's 4 or less, you round down. In this case, you would round the number down to 15.33
When the digit immediately to the right of it is 0-4 round down. If it is 5-9 round up.
If the numbers suggest that you should not then it is not better to round.
If you round up to the nearest 14, usually.