# File lib/facet/lisp-format.rb, line 834
        def cardinal_100s(n)
          out = []
          q, r = n.divmod(100)
          out << @@names[q] + ' hundred' if q > 0
          if r >= 20
            out << @@names[r / 10 * 10] + (r%10>0 ? '-' + @@names[r % 10] : '')
          elsif r > 0
            out << @@names[r]
          end
          out.join(' ')
        end