We use Ray's Arithmetic...Submitted by Chalcedonite on Thu, 03/08/2012 - 11:19
This is from Chapter XI.: Compound Denominate Numbers... Table of Value... when money actually had stay-value. http://s1064.photobucket.com/albums/u377/chalcedonite/?actio... The entire chapter is very interesting. I'm trying to make these old text books more intuitive for today's children.