'>' vs '+' in describing 'larger/more than' [closed]
In Math you do the > version.
But perhaps not in English? Actually in English you write it out: "more than ten kg".
I guess I only see "10+" in on-line shorthand; you should not assume everyone knows what it means.
No one writes When weight is > 10 kg. It looks awkward as you're using a mix of mathematical symbols and english words (in this case, the word is) together.
If you are to use >, you would write When weight > 10 kg, no need for is. If you are to use normal English, 10+ would usually look better.