19.55 rounded to the nearest tenth would be 20, the reason for this is because:
1|9| .55 - As you are rounding to the nearest ten, you would look at the value in this location, if it is 5 or higher, then it has to be 20, however if this value is 4 or lower, the nearest tenth would be 10.
Round 3.7416573 to the nearest tenth is 3.7
4.4, to the nearest tenth.
118.0
It is 61.9 to the nearest tenth
It then is 471.4 to the nearest tenth
It is 263.8 to the nearest tenth
24.6 Round 24.583 to the nearest tenth? => 24.600
73.19, to the nearest tenth, is 73.2
It is already rounded to the nearest tenth.
158.097 to nearest tenth = 158.1
It is 9.5 rounded to the nearest tenth
It is already to the nearest tenth as 93.9