@gunsnrosesgirl3 misrepresentative. the shortcut method being used by the Chinese student is only usable for multiplying 2-digit numbers that are both close to 100. It is completely useless outside of that narrow scope.
@HwnElectric Thank you for the update. PLEASE do not lose sight of SAFETY above all other priorities. The politicians and couch pundits can crawl down there themselves if they want to take such risks.