We write a line through Z to differentiate it from 2 We draw

>inb4 "distinguish" not "differentiate"

>>8593136
Because they look different.

A lot of people don't do the things you described, because, while it may be helpful, it is unnecessary.

>>8593254
They look really similar if you have bad handwriting (like me)

>>8593268
>if

Also, context.

File: ceon (6).jpg (33KB, 500x845px) Image search: [Google]

33KB, 500x845px

Most guides to good writing would tell you not to mix numbers and letters. It is probably only relatively recently that it has really been common though with oddly named technology but then that is balanced with a reduction in the use of handwriting.

Also number shapes have varied a lot in the past, except for 8 and 1. We write 4 closed for speed rather than opening it up to make clear it isn't 9.

>>8593136
>>8593143
just write "d/dx" afterwards to differentiate

>>8593308

I thought that for figures greater than one-hundred you switched to numbers.

eg ninety-nine, one-hundred, 101, 102.

Say if you're writing history and need to use an exact figure.

>>8593961
>I thought that for figures greater than one-hundred you switched to numbers.
If you were a dumb fucking prescriptivist, maybe.

>>8593961
That's the general rule for Chicago Style at least. But of course that doesn't apply to handwriting.

>>8593932
Leibniz pls go
A simple ' is much more efficient and clear

>>8593961
There's no standard limit. Garner says switch to numerals after ten. APS says nine. CMS originally said one hundred, now it allows switching after nine.

But generally you spell out all numbers in dialogue unless it's extremely long, and you always use numerals for sports scores.

>>8593136
The worst is when some asshole who's probably laughing his ass off puts "5s" in some arbitrary equation you have to solve.

You had to use the letter s? Nothing else? Just s?