skins1972 Posted October 27, 2005 Share Posted October 27, 2005 Here is a math trick so unbelievable that it will stump you. Personally I would like to know who came up with this and why that person is not running the country. 1. Grab a calculator. (you won't be able to do this one in your head) 2. Key in the first three digits of your phone number (NOT the area code) 3. Multiply by 80 4. Add 1 5. Multiply by 250 6. Add the last 4 digits of your phone number 7. Add the last 4 digits of your phone number again. 8. Subtract 250 9. Divide number by 2 DO YOU RECOGNIZE THE ANSWER? Link to comment Share on other sites More sharing options...
jrockster21 Posted October 27, 2005 Share Posted October 27, 2005 Its not that cool...you're just multiplying the first 3 digits of your phone number by 10,000, then adding the last 4. Just a little fun with factoring! I don't know if there are any math teachers...but that might be a good example when teaching that to your class! Link to comment Share on other sites More sharing options...
d0ublestr0ker0ll Posted October 27, 2005 Share Posted October 27, 2005 "Cool" and "Math" should never be in the same sentence. Link to comment Share on other sites More sharing options...
jrockster21 Posted October 27, 2005 Share Posted October 27, 2005 "Cool" and "Math" should never be in the same sentence. :laugh: Hey now! Link to comment Share on other sites More sharing options...
woolley83 Posted October 28, 2005 Share Posted October 28, 2005 "Cool" and "Math" should never be in the same sentence. No way man, math is the language of nature. it's the coolest... Link to comment Share on other sites More sharing options...
MissU28 Posted October 28, 2005 Share Posted October 28, 2005 I'm gonna give this problem to my kids tomorrow. I have the highest math group. They'll get a kick out of it. Link to comment Share on other sites More sharing options...
chomerics Posted October 28, 2005 Share Posted October 28, 2005 No way man, math is the language of nature. it's the coolest... Math will be the way we first communicate with another species Link to comment Share on other sites More sharing options...
jrockster21 Posted October 28, 2005 Share Posted October 28, 2005 Math will be the way we first communicate with another species I'm assuming you mean extra-terrestrials, because we've already communicated with apes by sign language! Link to comment Share on other sites More sharing options...
H-O-G Posted October 28, 2005 Share Posted October 28, 2005 pretty neat trick Link to comment Share on other sites More sharing options...
jrockster21 Posted October 28, 2005 Share Posted October 28, 2005 pretty neat trick Not really...its just adding and subtracting the same number, multiplying and then dividing by 2, just to get 10,000*(first 3 digits) + last 4 digits. Not that exciting. MissU28 -- this would be a good lesson on factoring, and order of operations! Link to comment Share on other sites More sharing options...
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