Answer:
It sounds like Carlo may have dyscalculia.
Step-by-step explanation:
Dyscalculia is often called "math dyslexia", although it should be made clear that they are different conditions. Dyscalculia is a learning disability related to understanding and manipulating numbers, performing calculations and memorizing mathematical facts. Carlo's symptoms signal he may have this disability. People with dyscalculia have difficulty perceiving numbers as having a value, seeing them as meaningless symbols. They also find it hard to grasp and remember concepts, formulae, and rules.