Page of arithmetical calculations (not in Leonardo's hand)
Columns of figures and long multiplications of large numbers
This leaf is filled with columns of figures and long multiplications — repeated large products such as 3589645689 and 7695364529, strings of zeros, and grids of dots used for place-value counting. The e-Leo catalogue notes that the whole sheet is written in a hand that is not Leonardo's.
On this page
Columns of figures and long multiplications
The page works through repeated large multiplications and sums, with numbers such as 3589645689, 1794822849 and 7695364529 set in columns. Rows of zeros and grids of dots serve as place-value aids. The calculations are laid out in a hand the catalogue identifies as not Leonardo's.