Wet a cotton cloth in rubbing alcohol and rub it over the scratches to get them clean and free of dust and debris.
Run the tip of your crayon lengthwise over the first scratch, pressing hard enough to leave wax in the scratch. Repeat for each scratch.
Run the edge of your putty knife forward over the length of each scratch, scraping off the crayon wax that’s sitting above the surface of the floor and pressing the rest of it down into the scratches.
Wipe the area vigorously with the alcohol-soaked cloth to take up the residual wax.
Assess the scratches to see if the wax has hidden them. If not, repeat the process.