Dyscalculia is a specific learning difficulty in mathematics.
Dyscalculia refers specifically to the inability to perform operations in mathematics or arithmetic. It could be described as an extreme difficulty with numbers.
Students with dyscalculia have difficulties with the simplest of numerical tasks and calculations such as addition, subtraction, multiplication, division and mental arithmetic and learning number facts such as multiplication tables. They confuse larger numbers with smaller ones and have problems with simple counting. The student can often start answering a question and then divide instead of adding or multiply instead of taking away - literally forgetting what they are being asked to do. They do not notice their common mistakes such as transposing, omitting and reversing numbers.
The literal translation of dyscalculia is having difficulties with calculations. It is thought to be caused by an impairment of the specific part of the brain that performs numerical tasks. This impairment can cause developmental difficulties in acquiring numerical skills, recognising numbers or symbols, mirror writing and keeping numbers in order in calculations.
Dyscalculia can also affect day to day tasks such as dealing with concepts of time or measurements, managing money and directions/ orientation.