Algorithms; Arithmetic -- Early works to 1900; Mathematics -- History
¶ In þe 5 place
h{i}t betokenes twenty þousant. þ{ere}for{e} he most haue 4 cifers
a-for{e} hym þat he may sto{n}de in þe 5 place. kepe þese 4 cifers in
thy mynde, þen loke how mony cifers goɳ to 3 thousant. Certayn to 3
thousante [*leaf 162b] goɳ 3 cifers afor{e}. Now cast ylke 4 cifers þat
schuld go to twenty thousant, And thes 3 cifers þat schuld go afor{e} 3
thousant, & sette hem in rewe ychoɳ aft{er} oþ{er} in þi mynde, as þai
schuld stonde in a tabull{e}. And þen schal þou haue 7 cifers; þen sett
þat 6 þe quych comes of þe m{u}ltiplicacioɳ of þe 2 digitt{es} aft{u}r
þe ylke cifers in þe 8 place as yf þat hit stode in a tabul. And loke
qwat a figur{e} of 6 schuld betoken in þe 8 place. yf hit wer{e} in a
tabul & so mych it is. & yf þat figure of 6 stonde in þe fyrst place he
schuld betoken but 6. ¶ In þe 2 place he schuld betoken sexty. ¶ In the
3 place he schuld betokeɳ sex hundryth. ¶ In þe 4 place sex thousant.
¶ In þe 5 place sexty þowsant. ¶ In þe sext place sex hundryth þowsant.
¶ In þe 7 place sex þowsant thousant{es}. ¶ In þe 8 place sexty þowsant
thousantes. þ{er}for{e} sett 6 in octauo loco, And he schal betoken
sexty þowsant thousantes. And so mych is twenty þowsant tymes 3
thousant, ¶ And þis rewle is gen{er}all{e} for all{e} man{er} of
articuls, Whethir þai be hundryth or þowsant; but þ{o}u most know well
þe craft of þe wryrchyng{e} in þe tabull{e} [*leaf 163a] or þou know to
do þus in þi mynde aftur þis rewle. Thou most þat þis rewle holdyþe note
but wher{e} þ{ere} ben 2 articuls and no mo of þe quych ayther of hem
hase but on figur{e} significatyf. As twenty tymes 3 thousant or 3
hundryth, and such oþ{ur}.
¶ Articulum digito si m{u}ltiplicare o{portet}
Articuli digit[i sumi quo multiplicate]
Debem{us} reliquu{m} quod m{u}ltiplicat{ur} ab ill{is}
P{er} reliq{u}o decuplu{m} sic su{m}ma{m} later{e} neq{ui}b{i}t.
[Sidenote: The third case of the craft; an example.]
¶ Her{e} he puttes þe thryde rewle, þe quych is þis. yf þ{o}u wel
m{u}ltiply in þi mynde, And þe Articul be a digitte, þou schalt loke þat
þe digitt be w{i}t{h}-Inne an hundryth, þen þou schalt m{u}ltiply the
digitt of þe Articulle by þe oþer digitte. And eu{er}y vnite in þe
nounbre þat schall{e} come þ{ere}-of schal betoken ten. As þus: yf þat
þ{o}u wold wete qwat is twyes 40. m{u}ltiplie þe digitt{e} of 40, þe
quych is 4, by þe oþ{er} diget, þe quych is 2. And þat wolle be 8. And
in þe nombre of 8 ben 8 vnites, & eu{er}y of þe ylke vnites schuld
stonde for 10. þ{ere}-fore þ{ere} schal be 8 tymes 10, þat wol be 4
score. And so mony is twyes 40. ¶ If þe articul be a hundryth or be 2
hundryth And a þowsant, so þat hit be notte a thousant, [*leaf 163b]
worch as þo{u} dyddyst afor{e}, saue þ{o}u schalt rekene eu{er}y vnite
for a hundryth.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account