¶ Her{e} he teches a gen{er}all{e} rewle þ{a}t yf þe first fig{ure} in þe rewle of fig{ure}s token a nomb{ur} þat is euen{e} al þ{a}t nomb{ur} of fig{ur}ys in þat rewle schal be euen{e}, as her{e} þ{o}u may see 6. 7. 3. 5. 4. Computa & p{ro}ba. ¶ If þe first [*leaf 139b] fig{ur}e token an nomb{ur} þat is ode, all{e} þat nomb{ur} in þat rewle schall{e} be ode, as her{e} 5 6 7 8 6 7. Computa & p{ro}ba. v{er}sus. ¶ Septe{m} su{n}t partes, no{n} pl{u}res, istius artis; ¶ Adder{e}, subt{ra}her{e}, duplar{e}, dimidiar{e}, Sextaq{ue} diuider{e}, s{ed} qui{n}ta m{u}ltiplicar{e}; Radice{m} ext{ra}her{e} p{ar}s septi{m}a dicitur esse. [Headnote: The Seven Rules of Arithmetic.] [Sidenote: The seven rules.] ¶ Her{e} telles þ{a}t þ{er} beɳ .7. spices or p{ar}tes of þis craft. The first is called addicioñ, þe secunde is called subtraccioñ. The thryd is called duplacioñ. The 4. is called dimydicioñ. The 5. is called m{u}ltiplicacioñ. The 6 is called diuisioñ. The 7. is called extraccioñ of þe Rote. What all þese spices ben{e} hit schall{e} be tolde singillati{m} in her{e} caputul{e}. ¶ Subt{ra}his aut addis a dext{ri}s vel mediabis: [Sidenote: Add, subtract, or halve, from right to left.] Thou schal be-gynne in þe ryght side of þe boke or of a tabul. loke wer{e} þ{o}u wul be-gynne to write latyn or englys in a boke, & þ{a}t schall{e} be called þe lyft side of the boke, þat þ{o}u writest toward þ{a}t side schal be called þe ryght side of þe boke. V{er}sus. A leua dupla, diuide, m{u}ltiplica. [Sidenote: Multiply or divide from left to right.] Here he telles þe in quych side of þe boke or of þe tabul þ{o}u schall{e} be-gyn{e} to wyrch duplacioñ, diuisioñ, and m{u}ltiplicacioñ. Thou schal begyn{e} to worch in þe lyft side of þe boke or of þe tabul, but yn what wyse þ{o}u schal wyrch in hym +dicetur singillatim in seque{n}tib{us} capi{tulis} et de vtilitate cui{us}li{bet} art{is} & sic Completur [*leaf 140.] p{ro}hemi{um} & sequit{ur} tractat{us} & p{ri}mo de arte addic{ion}is que p{ri}ma ars est in ordine.+ [Headnote: The Craft of Addition.] ++Adder{e} si nu{mer}o num{e}ru{m} vis, ordine tali Incipe; scribe duas p{rim}o series nu{mer}or{um} P{ri}ma{m} sub p{ri}ma recte pone{n}do figura{m}, Et sic de reliq{ui}s facias, si sint tibi plures. [Sidenote: Four things must be known: what it is; how many rows of figures; how many cases; what is its result. How to set down the sum.]