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The hyphen-minus symbol -is the form of hyphen most commonly used in digital documents. On most keyboards, it is the only character that resembles a minus sign or a dash so it is also used for these. The name hyphen-minus derives from the original ASCII standard, where it was called hyphen–(minus).
Compared to the 100-meter dash, dashes on Wikipedia are easy. The hyphen-minus (keyboard hyphen), en dash, em dash, and mathematical minus/negative symbols are different (see WP:Manual of Style/Dashes). Pressing the - on your keyboard, usually next to the 0 (zero) key, will produce a hyphen-minus.
The plus–minus sign or plus-or-minus sign, ±, is a symbol with multiple meanings: In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.
The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference.
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script.
Wikipedia uses four: the hyphen (sometimes called the hyphen-minus), the minus sign, the en dash, and the em dash. Hyphen (" - ", MOS:HYPHEN ) (actually the hyphen-minus character in ASCII or Unicode character sets) are used in many ways on Wikipedia.
On some keyboards – including the original IBM PC/AT (and later) German keyboards – the asterisk (*) key on the numeric keypad is instead labeled with the multiplication sign (×), and the divide-key is labeled with the division sign (÷) instead of slash (/).
Keyboard entry. In Microsoft Windows, this division sign is produced with Alt+0247 (or 246 with no zero) on the number pad, or by pressing Alt Gr+⇧ Shift++ when an appropriate keyboard layout is in use. In classic Mac OS and macOS, it is produced with ⌥ Option+/.
The minus sign − (U+2212 − MINUS SIGN) glyph is generally set a little higher, so as to be level with the horizontal bar of the plus sign. In informal usage, the hyphen-minus-(U+002D -HYPHEN-MINUS), provided as standard on most keyboards, is often used instead of the figure dash.
To express the minus sign in math, U+2212 − MINUS SIGN is used instead. ^ As per Unicode 15.1.0, the degree sign is not a mathematical symbol, since it is a measurement unit symbol rather than a math symbol. Consistently, TeX packages support many non-math symbols.