Enneades arithmeticæ, the numbring nines, or, Pythagoras his table extended to all whole numbers under 10000 and the numbring rods of the Right Honourable John Lord Nepeer : enlarged with 9999 fixt columns or rods, of single, double, triple, and quadruple figures, and with a new sort of double and moveable rods, for the much more sure, plain and easie performance of multiplication, division, and extraction of roots ...

Example of Multiplication.

In multiplication commonly it is best to Tabu∣••ate the greater Number as multiplicand when one

is greater then the other. For example. Tabulat•• 4628 to be multiplyed by 72. Place Unit unde•• Unit, as in the Margent a Then for 2 (the Un•••• of the Multiplyer) take the 2d cell of the Multi¦plicand, viz. 9256. and for 7 of the multiplyer tak•• the 7th cell of the Multiplicand, viz. 32396, an•• set both cells down, as you see in b Add the tw•• cells together, and the total Sum or product o•• multiplication will be 333216 as you find in c But if you Tabulate 72 to be multiplyed by 462•• the operation will appear as in d.

In Division the Divisor is to be Tabulated; an•• it much imports, for the speedier dispatch of yo•••• operation, that the leading Rod of the Divisor be •• great Rod or Column of the Table; a quadrupl•• rather then a Triple, a Triple then a double, •• double then a single, if the Number of your Di¦visor will permit.

Notes

• a

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• b

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• c

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• d

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