alleryInstantly seeing how many items without counting is:
AEstimating
BSubitizing
CRounding
DSkip counting
Answer & Solution
Correct answer: B. Subitizing
1. Subitizing is rapid, accurate and effortless.
2. It works for small quantities.
3. Estimating is for large sets; the others are separate skills.
_Source: Wikipedia, "Subitizing" (rev ?), section "Lead section"_
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