Wiktionary
a. 1 Not mathematical. 2 Not inclined toward mathematics.
Usage examples of "unmathematical".
On the assumption that many general readers are as unmathematical as I am, I will use them sparingly, though they are occasionally unavoidable, not least in a chapter dealing with things on a cosmic scale.
Orlin Okusa, you have an unmathematical mind and flattery will get you nowhere.
Especially am I helpless to help you in such a gross and unmathematical thing as eating.
As a relief from searching for news in a press devoid of news, the study of these problems is welcome enough, and to the unmathematical mind, no doubt, the solutions appear to be something miraculous.
But to the mathematical mind a thing more miraculous is the awe with which the unmathematical regard the simplest manipulation of figures.
His unmathematical son had been persuaded in this fashion to exert himself in school.