Developmental milestones for the typical 4-year-old often include recognizing colors and counting 10 or more objects, but for a little boy from suburban Chicago, tackling three-digit multiplication and fractions are next on the learning agenda.

Zorien Royce, a 4-year-old from Vernon Hills, is one of the youngest children ever to be accepted into two of the world's most prestigious high-IQ societies: Mensa and Intertel.

By 2-years-old, Royce was spelling words like 'hippopotamus' and 'alligator' and could count forward and backward to 100, his parents said. Now, at 4-years-old, he reads independently at a second- to third-grade level and is tracking three-digit multiplication and fractions.

"He could pick up new concepts at lightning speed and retained them effortlessly. That’s when we r

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