_To make an addition before the Figures are set, by knowing only how
many Figures are in each Row; as likewise how many Rows compose the
whole; and then adding yourself some Figures equal to those that had
been set._
Suppose the person had set five rows of figures, each row containing
five figures.
Say in your mind, as you are making the addition beforehand, 9 times 5
make 45; set down 5 and carry 4: repeat the same thing for each of the
five figures, as if they all counted 9; therefore for the second, say
again, 9 times 5 make 45, and 4 carried over make 49; set down 9 and
carry 4: in the same manner for the third, say 9 times 5 are 45, and
4 carried over are 49; set down 9 and carry 4: for the fourth do the
same; and set down 9 and carry 4: for the fifth repeat the same, by
setting down 9 and carrying 4.
Thus your addition being made before-hand will produce the sum of
499995: then shew this addition to every body in the company; and beg
some one to do you the favour of laying on a paper 5 rows of numbers,
containing five figures in each row.