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KevinWasaki (September 5, 2008 at 11:10 pm)
(100+a)(100+b)==100*100+100a+100b+ab==100(100+a+b)+ab
CessaSiranasya (August 30, 2008 at 1:17 am)
Thanks so much, dude! Now I can look even smarter in class and suck up to the teacher.
aunlaa (August 29, 2008 at 10:05 pm)
u are genius!!!thnx u are great!!!
kentttj (August 28, 2008 at 12:38 pm)
you are genius. thanks for the tips.
maths36 (August 26, 2008 at 9:12 pm)
That was so good!
tobitadagon (August 26, 2008 at 12:04 pm)
SMART BOARD FTW!!!!!!!!!!!
adamortiz62 (August 26, 2008 at 12:39 am)
i want this guy to be my teacher im pretty sure he can help in algebra and probably calculus.
nikkiesha09 (August 22, 2008 at 12:47 pm)
You again.You like math do you.
BGasperov (August 20, 2008 at 6:28 pm)
98 x 97 = 9700 - 200 + 6 = 9506
Queixoso (August 19, 2008 at 3:24 pm)
In fact, thats how people who dont know the trick do the math...The thing is that -normaly- people cant do (97*100)-(2*98) in less than 5 seconds.What the clip shows is a trick. The operations become more simple, they take less brainwork, and thats why it goes faster.Works well for me. Thanks for the hint mate! |
