It is 11.4.
To round to 1 decmal place you need to get rid of the digit in the second decimal place.
If that digit is 0, you just drop it.
If it is 1-4 then you also drop it.
If it is 6-9 then you drop it BUT increase the previous digit by 1.
If it is 5 ...
Now here is a problem. If you always drop the 5 you introduce a downward bias. If you always increase the previous digit, you introduce an upward bias. So, with a 5, you need to round down half of the time and round up half the time so as to avoid a bias. A statistically sound solution is to round up or down so that the previous digit is even.
3.3 rounded to 1 decimal place is 3.0.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
To one decimal place it is rounded to 0.9
It is 8.8
It is 2.4
round 0.2975 to 1 decimal place = 0.3
2.73 ≈ 2.7 to 1 decimal place
It is then 31.2 when rounded to 1 decimal place
You round to 1.0
6.5- you round it until it has one decimal.
4.96432 rounded to 1 decimal place is 5.0.
It is 4.1 when rounded to 1 decimal place
3.3 rounded to 1 decimal place is 3.0.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
6.32 rounded to 1 decimal place = 6.3
because
334.4 is already in 1 decimal place