Flooring typically comes in four sizes: regular, 1/2, 1/4 and 4x4. The regular size covers one fourth of your room, 1/2 and 1/4 are half and a quarter of the regular size, and 4x4 is a much smaller square (about twice the size of a puppet). See image for size comparison:
Your Magical Room comes with four regular sized timber floors and several platforms.
Smaller Floors (marked by * above):