Nummòlt Help files: video (operations with signed parenthesis)

Video help files: example

addition

subtraction

multiplication

#division#

parenthesis

signed parenthesis

creating numbers

strategies

Static Help: 23-15

274+162

25-18

12*12

324/18

(5+2)*3

-(5-10)

9998 => 9998+2-2

98*98

Nummòlt
Download page
Nummolt.zip: direct download

Animated help files: Example: -(5-10)
Operations with signed parenthesis

Double click to explode or to regroup 10 by 10.
Double click in the window to erase the parenthesis.