The distance between -1 and 0 is 1. So divide 1 a number larger than 5. For convinience use 10 now the numbers are 0-1/10 = -0.1 0-2/10 = -0.2 0-3/10 = -0.3 0-4/10 = -0.4 0-5/10 = -0.5 Multiply 1/10 by incrementing from one her you can obtain upto 9 numbers