If the number has at most one digit after the decimal point, you do nothing.
If it has more than one non-zero digit after the decimal point, you look at the second digit after the decimal. If it is 1, 2, 3 or 4, you delete it and subsequent digits. If it is 6, 7, 8 or 9 you add one to the first digit after the decimal point and delete the rest. If it is 5, you round the first digit to the nearest even digit (so you may or may not do anything), and delete from the second digit.
Some people, ignorant of bias and its effect, require the digit 5 to be rounded up in all cases. This introduces an upward bias in calculations for the following reason:
0 is not rounded.
The digits 1, 2, 3 and 4 are rounded down
The digits 5, 6, 7, 8 and 9 are rounded up.
In the long term, therefore, there would by fewer incidences of rounding down compared to rounding up. As a simple example, the mean of the first 20 integers, calculated from their rounded values is 11, not 10.5 which is the correct value.
To avoid this bias, 5 MUST be rounded down half the time and up half the time. The conventional way to do this while maintaining reproducibility of calculations is to round 5 so that the last surviving digit is even.
11.3 rounded to one decimal place is 11.3. "To one decimal place" simply means that your number should only have one decimal number in it. When you round, numbers 1 to 4 round down (so 11.32 would become 11.3) and numbers 5 to 9 round up (so 11.38 would become 11.4).
34.4 to one decimal place = 34.4
6.5- you round it until it has one decimal.
2.21 rounded to one decimal place = 2.2
3.91 rounded off to one decimal place = 3.9
19.05 rounded to one decimal place is 19.1. Numbers above 5 (inclusive) round up, numbers below round down. To be accurate do not round unnecessarily.
11.3 rounded to one decimal place is 11.3. "To one decimal place" simply means that your number should only have one decimal number in it. When you round, numbers 1 to 4 round down (so 11.32 would become 11.3) and numbers 5 to 9 round up (so 11.38 would become 11.4).
to round 68.4 to one decimal place = 68.4
To round 10.99557429 to one decimal place, you look at the digit in the tenths place, which is the second digit after the decimal point. In this case, the digit in the tenths place is 9. Since 9 is greater than or equal to 5, you round up the digit in the tenths place to the next higher number. Therefore, rounding 10.99557429 to one decimal place gives you 11.0.
The decimal 13.5 is already rounded to one decimal place.
34.4 to one decimal place = 34.4
It is: 1.2 rounded to one decimal place
It already is rounded to one decimal place.
To get the decimal, divide the numerator of the fraction by the denominator. If the decimal runs to more than one place, then you have to round it to one decimal place.
It will round up to 0.9 to one decimal place
6.5- you round it until it has one decimal.
To one decimal place it is 4.1