numeric keypad; number pad; numpad
Refers to the block of number keys on a keyboard or a standalone numeric keypad. Wasei-eigo from English 'ten key'.
wasei-eigo (Japanese-coined English), from ten key
I enter numbers using the numeric keypad on the computer.
This keyboard doesn't have a numeric keypad.
numeric key
Rarely used to refer to an individual number key. In practice, テンキー almost always means the keypad as a whole.
The '5' key on the numeric keypad has a bump.
Hyphenated variant; rarely used in practice.
Wasei-eigo from English 'ten key', referring to the ten number keys (0–9) on a numeric keypad.