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The Num lock should always be enabled. If it is disabled when you are attempting an alt code, it may cause errors or unexpected results in some applications. For example, Alt+4 could be interpreted as Alt +, ← which causes the browser to go back if the Num lock is disabled.
If your laptop keyboard doesn't have a separate NumPad, you should hold FN button with Alt button while typing the code.
This method does not work for Linux system, but it is possible to use Unicode.

Fraction Symbol

A fraction is how many parts of a whole we have. A slash placed between two numbers represent the fraction; the upper one is called the numerator, and the number after the slash is called the denominator. It can be written as a slanted slash or a horizontal line. In the proper fraction, the numerator is less than the denominator ( 3/4 ).

On the other hand, in the improper fraction, the numerator is greater than the denominator (4/3).

The simple fraction is a fraction in which both values of the numerator and denominator are complete (whole) numbers it is also known as the common fraction.

How to use and type Fraction symbol code?

If your keyboard contains separate NumPad, you should be sure that it is enabled. If it is not, press the Num Lock key to activate it then press hold down the Alt key on the left side. Type the number that represents that character or the symbol you want to insert and then release the insert key.
For example, for the greek letter omega Ω press and hold Alt and the type 0234 and then release.
There is another method that works only for word documents. In this method, you should type the characters first then press Alt and X. For example ( 0234 + Alt + X for greek letter omega ).
If you have a keyboard that doesn't have NumPad here is what will work for you. Find the Function key ( FN ) then presses and hold the function key while holding press and release Num LK key; then release FN key. This method will activate the numeric keypad in your laptop.
Then do the same steps as in the previous example.
Notice that in IBM code you don't use 0 (Alt + 255 ) before the code which is different from the windows generator that requires to add 0 (Alt + 0255 ) before the code.

Table of Symbols and Codes

Symbol	Title / Description	Unicode	Code / HTML Code
⅒	Vulgar Fraction One Tenth	⅒	⅒
↉	Vulgar Fraction Zero Thirds	↉	↉
¼	Vulgar Fraction One Quarter	¼	¼
⅓	Vulgar Fraction One Third	⅓	⅓
⅘	Vulgar Fraction Four Fifths	⅘	⅘
⅝	Vulgar Fraction Five Eighths	⅝	⅝
⅖	Vulgar Fraction Two Fifths	⅖	⅖
⁄	Fraction Slash	⁄	⁄
⅜	Vulgar Fraction Three Eighths	⅜	⅜
⅚	Vulgar Fraction Five Sixths	⅚	⅚
⅙	Vulgar Fraction One Sixth	⅙	⅙
⅐	Vulgar Fraction One Seventh	⅐	⅐
⅟	Fraction Numerator One	⅟	⅟
¾	Vulgar Fraction Three Quarters	¾	¾
⅛	Vulgar Fraction One Eighth	⅛	⅛
⅑	Vulgar Fraction One Ninth	⅑	⅑
⅔	Vulgar Fraction Two Thirds	⅔	⅔
½	Vulgar Fraction One Half	½	½
⅕	Vulgar Fraction One Fifth	⅕	⅕
⅗	Vulgar Fraction Three Fifths	⅗	⅗
⅞	Vulgar Fraction Seven Eighths	⅞	⅞