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In 4 minutes learn to calculate faster than the calculator. You can power-up your weak Math muscle and turn it into a bulging bicep.
I'm having a problem with 86x31...the calculator says it's 2666 but when i use you way it gives me 1766...what am i doing wrong...please reply at andrei21us@yahoo.com plz it's urgent
By Andrei21us 1185873757 Reply Spam [+3] Moderate Up Moderate Down Removewhen you come up with 3 digits after you multiply......86-69 is 17........14x69 is 966. take the 9 and add it to the 17 and you have 2666.
By pennsteve676767 1186299286 Reply Spam [+0] Moderate Up Moderate Down RemoveThats a nice ... um ... trick ... still looks that a calculator comes in handy here...but nice vid anyway!
By Porhoken 1185952392 Reply Spam [+2] Moderate Up Moderate Down Remove
Very easy to use, maybe one thing though, there seems to be many different tricks for numbers close to ten, numbers close to 100 etc...
What about the numbers not close to 10 or 100 etc...?
What if one remembers the wrong trick while mentally calculating?
Just a thought, keep the tricks coming, they're great!
hey dude I think that you are a math teacher or if you are not then you got it from a math teacher but whatever that is so nice from you to share it with us,,,othersdont do!!!
By qaz_qaz824@Y! 1186234087 Reply Spam [+1] Moderate Up Moderate Down Remove
quality stuff!!! keep it up
what if one or both factors are not close to 100? how is it?? for example...85x94=?
tahnks
visite www.amie-cafe.piczo.com
how do u do this with smaaller numbers such as 23x10...?
By magicpanda 1199859088 Reply Spam [+0] Moderate Up Moderate Down RemoveI teach cable theory for a major cable provider and will use this in my class as a class opener. I just cannot figure out why someone would post a negative comment on such a good video? Good stuff here, and don't let the negative comments get you down. Keep it going!
By AddictedToRadios 1195569390 Reply Spam [+0] Moderate Up Moderate Down RemoveAll I have to say thanks...and keep it up..totally awesome videos..
By I.T.Mario 1188439779 Reply Spam [+0] Moderate Up Moderate Down RemoveCongrats, you just managed to piss me off with the 'cross your heart' #$@#% what da @#$#....where's my shotgun when I need it...you'r only alive cause it's illegal to shoot you....
By Arkan-X 1186920517 Reply Spam [+0] Moderate Up Moderate Down RemoveCool... I like it... Now i can calculate soooo fast... :):) Thanks for the trick... :):) Keep it up...
By Zet Nic 1186316368 Reply Spam [+0] Moderate Up Moderate Down Removea x b (where a, b < 100)
= (100 - i) x (100 - j) (where 100 - i = a, 100 - j = b)
= 100x100 - 100i - 100j + i*j
= (100 - i - j)*100 + i * j
= (a - j)*100 + i*j or (b - i) * 100 + i*j
(where i = 100 -a, j = 100 -b)
5*****
By decibel29 1185895572 Reply Spam [+0] Moderate Up Moderate Down Removegreat teacher ! all give him 5 stars for this great find :)
By morax 1185890834 Reply Spam [+0] Moderate Up Moderate Down RemoveThanks for sharing. I stuggled through calculas 1, that's as far as I got.
Female models sexy pictures at: just kidding, why can't metacafe do more about these spammers that are infecting the threads.
Comment LOL!!!!!111
By Randomahoa 1203461493 Reply Spam [+0] Moderate Up Moderate Down RemoveThis is so cool. Im in college for computer science and we have a lot of math so any trick that helps me is appreciated.
By dlf003 1185801054 Reply Spam [+0] Moderate Up Moderate Down RemoveDid take alot of time to find out? no one would've thought of that
By Lebanese101 1185831486 Reply Spam [-2] Moderate Up Moderate Down Removeholy crap, this is amazing!
it works so well and so quickly, only problem is i cant subtract
if i had a good trick for subtracting numbers from 100 faster then it would be incredible
i could calculate that in 4 seconds with a calculator without thinking and i bet you could figure out 58X32 in 5 seconds well guess what a calculator can. crap video.
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