I don't know if it's still there despite the fact the numbers are no longer on the keys... but on my MBP, the numb pad keys are as follows...
M = 0
J = 1
K = 2
L = 3
U = 4
I = 5
O = 6
7 = 7
8 = 8
9 = 9
0 = /
P = *
- = =
; = -
Right Arrow key = Home
Left Arrow Key = End
Down Arrow Key = Page Down
Up Arrow Key = Page up
When numb lock is on