What is 342.3846 rounded one decimal place?

Answer 1

To answer this we need to look at the 2nd decimal place. if the 2nd decimal place is 5 or larger then we add 1 to the 1st decimal place, if it is 4 or less than we do not add 1 and just truncate the rest of the digits.

Examples:

12.45 = 12.5 (because 5 needs to be rounded up)

12.31 = 12.3 (because 3 is less than 5)

etc

So, 342.3846 = 342.4 since 8 is larger than 4