I pick up a lovely jelly roll the other week, its one of the Moda ones, want to make a quilt for a twin, I thnk you call it, bed. It needs to go quite a way down the sides as there is a double duvet on the bed, hate having a cold rear when I roll over in the night, I was planning to do the jelly roll and then add borders to make it wide and long enough. My brain will not allow me to work out the math to do it any other way.