Cocker's Arithmetick: being a plain and familiar method suitable to the meanest capacity, for the full understanding of that incomparable art, as it is now taught by the ablest school-masters in city and country ... / By Edward Cocker, late practicioner [!] in the arts of writing, artihmetick, and engraving. Being that so long since promised to the world. Perused and published by John Hawkins, writing-master near St. George's church in Southwark, by the author's correct copy, and recommended to the world by many eminent mathematicians and writing-masters in and near London.

Edward Cocker

Date:: 1697

Credit: Cocker's Arithmetick: being a plain and familiar method suitable to the meanest capacity, for the full understanding of that incomparable art, as it is now taught by the ablest school-masters in city and country ... / By Edward Cocker, late practicioner [!] in the arts of writing, artihmetick, and engraving. Being that so long since promised to the world. Perused and published by John Hawkins, writing-master near St. George's church in Southwark, by the author's correct copy, and recommended to the world by many eminent mathematicians and writing-masters in and near London. Source: Wellcome Collection.

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$if The terms being difpofed according to the 7th. Rule ies), MOTegoing will fiand thus, : A.B 49] 36] & at Amfterdam 9°) us| /. at Dantzick ri2f /, at London. ie hereby I find that the Terms under B multiplyed i foRether prodyce 467712 for a:dividend, and the perms under 4, viz. go and 90 produce 3600 for a Pivifor, and Divifion being finifhed, the quotient gi- Weth 1293322 pounds at Dantzick for the Anfwer. l, at Loxzd. i. at Amit. reese» serpent Sean Girma CHAP XXXI. Single Pofition. | if Egative Arithmetick, called the Rule of Falfe, N is that by which we find out a truth, by num- Persinvented or {nppofed, and this is either fingle-or louble. . #2. The Rule of Single Pofition is when at once, ; wx by one Falfe pofition, or feigned number, we find out the true Number fought. §| 3- In che fingle Rule of Falfe, when y ou have-made Wade choice of your pofition , work it according to the ,,.Wenour of the queftion, asif it were the true number i. #Pught, and if by the ordering your pofition you a Had the refult either too much or too little you may ,, #nen find our the number fought. by this proportion Ibllowing, viz. » | Asthe refale of your pofition is to the poficion, fo rr ip the given number to the number fought. . Example, _ | Quel. 1. A Perfon having about him a certain num- ” her of Crowns, faidif the fourth and third and fixth of “ them were added together, they would make juft 4s, “. Weow I demand the number of Crowns lie had about * fim? 2? Anfwer, 6 @ Crowns. To$

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