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a quick math challenge
12-27-2013, 04:43 PM
Post: #5
RE: a quick math challenge
The kids forget it almost immediately. I might teach it to them in 6th grade, and in 7th grade they've forgotten it. They do generally know, however, that all even numbers are divisible by 2.

Regarding adults, I suspect that if you took a man-on-the-street poll, you'd probably find fewer than 5% would know the divisibility-by-3 rule.
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Messages In This Thread
a quick math challenge - Don Shepherd - 12-27-2013, 05:03 AM
RE: a quick math challenge - Han - 12-27-2013, 05:12 AM
RE: a quick math challenge - Don Shepherd - 12-27-2013, 12:47 PM
RE: a quick math challenge - Don Shepherd - 12-27-2013 04:43 PM
RE: a quick math challenge - Paul Dale - 12-27-2013, 10:53 PM
RE: a quick math challenge - Les_Koller - 12-28-2013, 10:06 PM
RE: a quick math challenge - Waon Shinyoe - 12-29-2013, 02:19 PM
RE: a quick math challenge - Thomas Klemm - 12-29-2013, 03:37 PM
RE: a quick math challenge - aurelio - 12-29-2013, 06:31 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 03:03 PM
RE: a quick math challenge - Thomas Klemm - 12-31-2013, 05:38 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 03:05 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 07:25 PM



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