A child cannot tell at a glance how many dots are on a die and must count each one. Which early skill is weak?

1. Subitizing is knowing a small count at a glance without counting. 2. Children with dyscalculia can subitize fewer objects and take longer. 3. Rounding, area estimation and regrouping are later skills. _Source: Wikipedia, Dyscalculia, Signs and symptoms_