Rounding off to two decimal places in SQL

You could cast your result as numeric(x,2). Where x <= 38.

select
    round(630/60.0,2),
    cast(round(630/60.0,2) as numeric(36,2))

Returns

10.500000    10.50

With SQL Server 2012, you can use the built-in format function:

SELECT FORMAT(Minutes/60.0, 'N2')

You can use:

select cast((630/60.0) as decimal(16,2))

in SQL Server