I'd be grateful if anybody could help...............

I am aware that numbers can be rounded using various formulas, or indeed they can also be rounded in the format cell fuction to the nearest 1,000. However, does anybody know of a way a range of numbers can be formatted using the "format cell" custom option, to round to the nearest 10, i.e 1,621,012 becomes 1,621,010 or 289 becomes 290. I would wish the original values to remain the same, but the veiw only to be altered.........

Hope that makes sense and somebody can help