ANSWER
83.1
Step-by-step explanation
We have the number 83.105
First, we have to locate the number that is after the tenth place value.
The number in the tenth place value is 1.
The number after the tenth place value is 0.
When rounding:
=> if the number after the needed place value is greater than 4, we add one to the place value we need.
=> if the number after the needed place value is less than or equal to 4, we round down to 0.
So, since the number after the tenth place value is less than 4 (0), we will add nothing to the number and the new number is:
83.1
The number has been rounded to the nearest tenth.