The article explains how decimal values are typically represented in terms of fractions or rounded forms, such as ".05" as "nose," ".1 and .15" as "head," up to ".85, .9, and .95," which are rounded to the next integer.
.05 is normally displayed as nose
.1 and .15 are normally displayed as head
.2, .25, .3 and .35 are normally displayed as neck
.4, .45, .5, .55, .6 are normally displayed as 1/2
.65, .7, .75 and .8 are normally displayed as 3/4
.85, .9 and .95 are normally rounded up to next integer