It is the key marked: Num Lock. There should be a light showing on the keyboard when the Num Lock has been pressed and the numeric keypad can be used.
Use the lower case "x". Example: axb=abSome mathematicians would also accept a period (.). Example: a.b=ab In some computer program an asterix (*) is used to shoe multiplication. Example: a*b=ab
When you "enable" your number lock key, when you press the number buttons on the numeric keypad it will type numbers. When you "disable" your number lock key the number keys on your numeric keypad will no longer come up but the keypad will return to its default settings. Certain numbers do certain things when the number lock key is disabled.
To type numbers using the numeric keypad, first ensure that the Num Lock key is enabled so that the keypad functions for numeric input. Then, simply press the corresponding number keys on the keypad to input the desired digits. You can also use the arithmetic operation keys (like +, -, *, /) for calculations. If you're using a laptop without a separate numeric keypad, you may need to use a function key combination to access the numeric keypad functionality.
For Windows press and hold the <alt> key then on the numeric keypad hit 0-1-5-9
If the Numeric Lock (Num Lock) key is disabled, the numeric keypad will not function for entering numbers. Instead, the keys on the numeric keypad will typically perform their alternate functions, which often include navigation keys like arrows or editing commands. This means that pressing keys on the numeric keypad will result in different actions rather than inputting numeric values. To use the numeric keypad for numbers again, the Num Lock key must be enabled.
You should just be able to hit the NumLock key on the numeric keypad.
For Windows press and hold the key then on the numeric keypad hit 0-1-5-9alt+0153
numeric key function
1) Set the number lock on you keyboard. 2) Press and hold the <alt> key. 3) Press 0-1-6-9 on the numeric keypad.
NumLock
Facebook prevents comments that include only only standard spaces, but you can use Windows "Alt" numeric character codes to leave blank comments. "Alt" numeric codes allow Windows users to insert foreign language and special symbols into documents, and you can use this method to insert a soft hyphen into a Facebook field. The soft hyphen isn't displayed, resulting in a comment that appears blank.Instructions1. Click within the Facebook comment box to insert the cursor within it.2. Press the "Num lock" key near the top left of the keypad to turn on your numeric keypad.3. Hold down the "Alt" key on your keyboard while typing "0173" on the numeric keypad. Use the numeric keypad, not the row of numerals on your keyboard, to enter the numeric code.4. Press the "Enter" key to send the comment to Facebook
Facebook prevents comments that include only only standard spaces, but you can use Windows "Alt" numeric character codes to leave blank comments. "Alt" numeric codes allow Windows users to insert foreign language and special symbols into documents, and you can use this method to insert a soft hyphen into a Facebook field. The soft hyphen isn't displayed, resulting in a comment that appears blank.Instructions1. Click within the Facebook comment box to insert the cursor within it.2. Press the "Num lock" key near the top left of the keypad to turn on your numeric keypad.3. Hold down the "Alt" key on your keyboard while typing "0173" on the numeric keypad. Use the numeric keypad, not the row of numerals on your keyboard, to enter the numeric code.4. Press the "Enter" key to send the comment to Facebook