Table 4.

Calculation characteristics of 18 patients

Characteristics	n
Difficulty with dot enumeration and number counting	0
Difficulty reading simple numbers	0
Mechanical difficulties in writing numbers	0
Quantity (magnitude) estimation of larger vs. smaller	0
Difficulty recognizing the four common math symbols	3
Difficulty doing simple alignment of numbers without placement errors	5
Mental processing problems in doing simple problems in head	13
Overall numeracy difficulties (time on clock, word problems, cognitive estimations, contextual numerical usage)	13
Simple written calculation (one double digit) difficulty with syntax problems (completion of the problems and errors such as borrowing or carrying-over)	18