A day late and in the wrong year, I've come up with a notation idea for : there should be a different zero symbol to show (lack of) precision.
e.g. 3xxx instead of 3000 when figure is correct to the nearest 1000.

@christianp I like it, certainly it'd be handy for figures like 30xx.

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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.