When a question says to do decimal form with one decimal accuracy and three decimal accuracy. Does this mean that x=0.75135 would become x=1 and x=0.75 ?

1 decimal accuracy

x=0.75135

The Digit close to 7 is @least 5 add 1 to 7

It becomes

x=0.8.

Less than 5

Leave it as 0.7

The same ideal is to 3 decimal place