Ray's new practical arithmetic (Ray's arithmetic series) (Ray's arithmetic series)
Mott Media has Republished the Version of Ray's Arithmetic from the late 1870's and early 1880's! Reviews basic arithmetic skills and carries them to high levels. Also covers topics of measurement, factoring, decimals, percentage, ratio, proportion, powers, roots, and geometry. For grades 5 and 6. Good mastery of this book takes a child higher than a usual grade 6 level.
