Numeric Keypad On Keyboard - Asus T300L series User Manual

Numeric keypad on keyboard*

This Notebook PC comes with 1 select keys that you can also use for
numeric input.
The numeric keypad on your Notebook PC are 1 select keys that are
originally part of your standard QWERTY keyboard. Using the function
key, these select keys can become a numeric keypad on your Notebook
PC.
Press
as number keys or as their original keyboard function.
Notebook PC E-Manual
to toggle between using these keys