Cube roots and simplified fractions

Anybody whith a minimal mathematical formation, even 10-year-olds, know that 4/8 = 1/2, and that 10/100 equals 1/10. Similarly, one tends to believe that the cube root of a number bigger than 1 is supposed to be smaller than that number.

Well, this guy doesn't


Now, for those of you who didn't already saw it, I'll point you to the end of the image, to see one of the greatest simplifications methods ever: dividing by 10_0 ! What? Did you never hear about it? It's the same as dividing by 100, but with a space in the middle! And it only affects the numbers you want, not necessarily the entire fraction! And what is more, you don't even have to bother to do the subtractions correctly! Just write 15-59=39, and you're done!