can I paste a formula as a value in numbers for iCloud?

If you double-click on the cell you want to paste into, you can paste the value using cmd-v. Rather annoyingly though, you will also get a line end and an extra blank line after the value.

I was able to use Paste and Match Style, found in the Edit menu of Safari. I don't recall the shortcut for it (if there is one). I set mine to Shift Command V for all applications either because it didn't have one or I didn't like the one that Apple chose.