which summe yf you marke well, you nede none other examples for to lerne the numeration of 118 b. *this forme. But this shal you marke, that as you dyd in the other kynde of arithmetike, set a pricke in the places of thousandes, in this worke you shall sette a starre, as you se here.

Addition on the Counting Board.

Addition. S. Then I perceave numeration, but I praye you, howe shall I do in this arte to adde two summes or more together?

M. The easyest way in this arte is, to adde but 2 summes at ones together: how be it you may adde more, as I wyll tell you anone. Therfore when you wyll adde two summes, you shall fyrst set downe one of them, it [forseth] not whiche, and then by it drawe a lyne crosse the other lynes. And afterward set downe the other summe, so that that lyne may be betwene them, as yf you wolde adde 2659 to 8342, you must set your summes as you se here.

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And then yf you lyst, you 119 a. *may adde the one to the other in the same place, or els you may adde them both together in a newe place: which waye, bycause it is moste playnest, I wyll showe you fyrst. Therfore wyl I begynne at the vnites, whiche in the fyrst summe is but 2, and in ye second summe 9, that maketh 11, those do I take vp, and for them I set 11 in the new roume, thus,

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Then do I take vp all ye articles vnder a hundred, which in the fyrst summe are 40, and in the second summe 50, that maketh 90: or you may saye better, that in the fyrste summe there are 4 articles of 10, and in the seconde summe 5, which make 9, but then take hede that you sette them in theyr 119 b. *ryght lynes as you se here.

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Where I haue taken awaye 40 from the fyrste summe, and 50 from ye second, and in theyr stede I haue set 90 in the thyrde, whiche I haue set playnely yt you myght well perceaue it: how be it seynge that 90 with the 10 that was in ye thyrd roume all redy, doth make 100, I myghte better for those 6 counters set 1 in the thyrde lyne, thus: