innumerate

adj

1. Lacking numeracy.

   “The worry is that we, as a society, will become innumerate, not just illiterate. A.I. appears to be exacerbating an alarming trend in which our basic education is failing our young citizens.”

noun

1. One who lacks numeracy skills.

   “Some innumerates simply refuse to accept that this decade, this century, this millennium all began on Jan. 1, 2001.”