Look at these pics and help please. We just bought this house almost 3 months ago and are remodeling the entire thing. When we started scraping the linoleum off the laundry room floor tonight we noticed a couple of decent sized cracks. I have included pics, please take a look and let me know if this is a huge problem or if I can float another layer over it and be OK. Maybe even backerboard as we will be tiling this room. This is the lower level of the house on a slab, and this is not very near the foundation walls. Any help is appreciated, wife is really freaked out.