math???? nawwwwwwww. I tend to sew by the seat of my pants as they used to say..... I"ll make it work... now that DH tends to go shopping with me, he is a more percise person( guess the Navy did that to him) I give him the approx in my head ( usualy holding hands/fingers out--- oh about this size dear) and he comes up with a amt I need... me? uh huh.. ok go with what he sez....smile..
I have freq thought of doign a table cloth... just havnet gotten the nerve up or the motivation yet....Looking forward to seeing urs!