For a baby or child you can use 1 to 1 1/2 yards of fleece & 1- 2 packages of blanket binding.
For an adult 2 yards of fleece and 2 packages of binding will make a nice sized blanket. First, calculate how many yards of binding you'll need for your blanket & sew together enough binding to go all the way around plus another 12 inches for overlapping the ends and the seam allowance. Sew the beginning of one package of binding to the end of the other in order to match the fold in the binding. Press the matching ends open; sew a 1/2 inch seam. Press the seam open then re-press the fold where you joined the binding.