How can i round up numbers?

#.#_#^#

Underline is ones. Bold is tenths. _{Subscript is hundredths.} ^{Superscript is thousands.}

Rounding to the tenths or other digit is easy. Follow this simple rules below for the tenths:

$0,1,2,3,4$: Leave preceding digit (ones in this case) alone.

$5,6,7,8,9$: Add 1 to the preceding digit.

That's all!