40 40 is declared by settynge of the thombe crossewayes on the foremost fynger.
50 50 is signified by ryght stretchyng forth of the fyngers ioyntly, and applyenge of the thombes ende to the partition of the myddle fynger and the rynge fynger, or weddynge fynger.
60 60 is formed by bendynge of the thombe croked and crossynge it with the fore fynger.
70 70 is expressed by the bowynge of the foremost fynger, and settynge the ende of the thombe between the 2 foremost or hyghest ioyntes of it.
80 80 is expressed by settynge of the foremost fynger crossewayes on the thombe, so that 80 dyffereth thus from 40, that for 80 the forefynger is set crosse on the thombe, and for 40 the thombe is set crosse ouer ye forefinger.
90 136 a. *90 is signified, by bendynge the fore fynger, and settyng the ende of it in the innermost ioynte of ye thombe, that is euen at the foote of it. And thus are all the nombers ended vnder 100.
S. In dede these be all the nombers from 1 to 10, and then all the tenthes within 100, 11, 12, 13,
21, 22, 23 but this teacyed me not how to expresse 11, 12, 13, etc. 21, 22, 23, etc. and such lyke.
M. You can lytell vnderstande, yf you can not do that without teachynge: what is 11? is it not 10 and 1? then expresse 10 as you were taught, and 1 also, and that is 11: and for 12 expresse 10 and 2: for 23 set 20 and 3: and so for 68 you muste make 60 and there to 8: and so of all other sortes.
100 But now yf you wolde represente 100 other any nomber aboue it, you muste do that with the ryghte hande, after this maner.
You must expresse 100 in the ryght hand, with the lytell fynger so bowed as you dyd expresse 1 in the left hand.