Going Supersonic

Going Supersonic is a  given for quickly and correctly answering 20 skill problems in a row(time limit depends on skill difficulty). It is preceded by Going Transonic and suceeded by Sub-light Speed. And if you achieve this, You already earned "Going Transonic" and "Picking up Steam.

Trivia
The easiest skill to get this badge in is 1-digit Addition, 1-digit Subtraction, 1-digit Multplication and 1-digit Division.