Algorithms; Arithmetic -- Early works to 1900; Mathematics -- History
take 4 out of 2. it wyl not be, þerfor{e} borro on{e} of þe next
figur{e}, þ{a}t is 2. and sett þat ou{er} þe hed of þe fyrst 2. & rekene
it for ten. and þere þe secunde stondes write 1. for þ{o}u tokest on out
of hy{m}. þan take þe neþ{er} fig{ur}e, þat is 4, out of ten. And þen
leues 6. cast to 6 þe fig{ur}e of þat 2 þat stode vnd{er} þe hedde of 1.
þat was borwed & rekened for ten, and þat wylle be 8. do away þ{a}t 6 &
þat 2, & sette þ{ere} 8, & lette þe neþ{er} fig{ur}e stonde stille.
Whanne þ{o}u hast do þus, go to þe next fig{ur}e þ{a}t is now bot 1. but
first yt was 2, & þ{ere}-of was borred 1. þan take out of þ{a}t þe
fig{ur}e vnd{er} hym, þ{a}t is 3. hit wel not be. þer-for{e} borowe of
the next fig{ur}e, þe quych is bot 1. Also take & sett hym ou{er} þe
hede of þe fig{ure} þat þou woldest haue y-draw oute of þe nether
figure, þe quych was 3. & þou myȝt not, & rekene þ{a}t borwed 1 for ten
& sett in þe same place, of þe quych place þ{o}u tokest hy{m} of,
a cifer, for he was bot 1. Whanne þ{o}u hast þ{us} ydo, take out of þat
1. þ{a}t is rekent for ten, þe neþ{er} figure of 3. And þ{ere} leues 7.
[*leaf 144b] cast þe ylke 7 to þe fig{ur}e þat had þe ylke ten vpon his
hed, þe quych fig{ur}e was 1, & þat wol be 8. þan do away þ{a}t 1 and
þ{a}t 7, & write þ{ere} 8. & þan wyrch forth in oþ{er} figuris til þ{o}u
come to þe ende, & þan þ{o}u hast þe do. V{er}sus.
¶ Facque nonenarios de cifris, cu{m} remeabis
¶ Occ{ur}rant si forte cifre; dum demps{er}is vnum
¶ Postea p{ro}cedas reliquas deme{n}do figuras.
[Sidenote: A very hard case is put. Here is an example.]
¶ Her{e} he putt{es} þe fourte case, þe quych is þis, yf it happe þat þe
neþ{er} fig{ur}e, þe quych þ{o}u schalt draw out of þe hier fig{ur}e be
mor{e} pan þe hier figur ou{er} hym, & þe next fig{ur}e of two or of
thre or of foure, or how mony þ{ere} be by cifers, how wold þ{o}u do.
Þ{o}u wost wel þ{o}u most nede borow, & þ{o}u mayst not borow of þe
cifers, for þai haue noȝt þat þai may lene or spar{e}. Ergo[{4}] how
woldest þ{o}u do. Certayɳ þus most þ{o}u do, þ{o}u most borow on of þe
next figure significatyf in þat rewe, for þis case may not happe, but yf
þ{ere} come figures significatyf aft{er} the cifers. Whan þ{o}u hast
borowede þ{a}t 1 of the next figure significatyf, sett þ{a}t on ou{er}
þe hede of þ{a}t fig{ur}e of þe quych þ{o}u wold haue draw þe neþ{er}
figure out yf þ{o}u hadest myȝt, & reken it for ten as þo{u} diddest
i{n} þe oþ{er} case her{e}-a-for{e}. Whaɳ þ{o}u hast þus y-do loke how
mony cifers þ{ere} wer{e} bye-twene þat figur{e} significatyf, & þe
fig{ur}e of þe quych þ{o}u woldest haue y-draw the [*leaf 145a] neþ{er}
figure, and of eu{er}y of þe ylke cifers make a figur{e} of 9. lo an
Ensampull{e} after.
+-----+
|40002|
|10004|
+-----+
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