math round for math> math round {flags} 
--precision, -p {number}: digits of precision| input | output | 
|---|---|
| list<number> | list<number> | 
| number | number | 
Apply the round function to a list of numbers
> [1.52.3-3.1] |math round
╭───┬────╮
│0│2│
│1│2│
│2│-3│
╰───┴────╯
Apply the round function with precision specified
> [1.5552.333-3.111] |math round-p2
╭───┬───────╮
│0│1.56│
│1│2.33│
│2│-3.11│
╰───┴───────╯
Apply negative precision to a list of numbers
> [123, 123.3, -123.4] |math round-p-1
╭───┬──────╮
│0│120│
│1│120│
│2│-120│
╰───┴──────╯
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    https://www.nushell.sh/commands/docs/math_round.html