Numeric keypad

Also referred to as the number pad, the numeric keypad is a 17-key keypad usually found on the far right side of a typical IBM 101 / 2-key keyboard. The U.S. numeric keypad contains the below keys (going from top left to bottom right).

1. Num Lock
2. Forward slash (divide)
3. Star (times)
4. dash (minus)
5. numeric 7, also used as the home key
6. numeric 8, also used as the up arrow key
7. numeric 9, also used as the page down key
8. plus (add)
9. numeric 4, also used as the left arrow key
10. numeric 5
11. numeric 6, also used as the right arrow key
12. numeric 1, also used as the end key
13. numeric 2, also used as the down arrow key
14. numeric 3, also used as the page down key
15. enter key
16. numeric 0 key, also used as insert
17. period, also used as a delete key. 

Below is a visual example of the Saitek Gamers' keyboard and where the keypad is located on almost every computer keyboard.