“The word dyscalculia has Greek and Latin roots: dys (the Greek part) means badly and calculia (the Latin part) comes from calculare: making calculations, so dyscalculia is ‘badly calculating’ or having trouble with making calculations. This is similar to the term ‘dyslexia’ that can be translated as ‘badly reading.’

Dyscalculia is a specific learning disability with an impairment in mathematics, which can affect calculations, problem solving, or both. It impacts all sorts of numerical tasks and it is inborn, meaning you are born with it. Although there is not yet a generally accepted definition of dyscalculia, the DSM-5 mentions difficulties with number sense, memorization of basic math facts, and accurate and fluent calculation. An estimated 4-7% of students have dyscalculia, so a teacher can expect to have one or two students with this per class.”  Learning Disabilities Association of America