How do I type a slashed zero on an iPad?

There are two Fonts I found on my Mac called Ayuthaya and Menlo

Please see the pic below

You can download fonts from the App Store app , then use them in documents you create on iPhone.

1. After you download an app containing fonts from the App Store, open the app to install the fonts.
2. To manage installed fonts, go to Settings > General, then tap Fonts.

See the pic below

Install and manage fonts on iPhone - Apple Support (IN)

Regarding Slashed Zero (0) in some typographical conventions, a slashed zero (Ø) can be used to distinguish it from the letter "O" in contexts where the confusion between the two might arise. This is especially common in mathematical and technical notation, where precision and clarity are important.

If you need to use a slashed zero symbol, you can typically find it in character maps or by using specific keyboard shortcuts or Unicode codes, depending on the operating system or software you are using.

Regarding Slashed O...

Ø (and ø) is a Scandinavian vowel letter. The letter Ø or the symbol ∅ (a circle crossed by a diagonal slash) etc.

ø --> The twenty-eighth letter of the Norwegian alphabet, written in the Latin script. SenecaEdit. ConjunctionEdit. ø. Abbreviation of ...

Ø is a letter used in the Danish, Norwegian, Faroese, and Southern Sámi languages. It is mostly used as a representation of mid front rounded vowels

ø means flux in electric and magnetic physics. ø can also be taken as an angle variable in trigonometry.

Missba52 wrote:

How do I type a slashed zero on an IPad. I can get a slashed O, but not a slashed 0.

The slashed number zero is found only in certain fonts, normally monospaced, like Monaco. It is not a separate character from unslashed zero. It will only display when the correct font is active.

If you do a Google search, you can find lists of fonts that have it, such as

https://seniortechgroup.com/font-for-numbers-with-slashed-zero/#:~:text=They%20are%20Consolas%2C%20Inconsolata%2C%20Roboto,and%20Share%20Tech%20Mono%20fonts.

The character Øø is not a number, but a letter used in certain European languages.

For applications that allow for font selection, use a font that has the slashed zero in its glyph design.

E.g. Menlo, Monaco, SF Mono, Consolas, Terminal, ProFont, Roboto — all monospace fonts.

There is no Unicode character for this as different from the regular zero.