Cool Math Trick - Really Fast Multiplication !!!

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  • 26-Nov-06
This video shows how to multiply three digit numbers in a single step !!! Nominate for ?
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  • Grouty But... by Grouty, 1165090054 Report sent Spam Reply [+6] Thumbs Up Thumbs Down

    ...does it work with two numbers without the same amount of digits? E.g 42 and 569 multiplied together.

    What technique can i use for that? Do i just put zeros in front to make up the digits or what? In fact i'm gonna try it out now.

    • Mathwiz Yeah, put 0s by Mathwiz, 1165097289 Report sent Spam Reply [+4] Thumbs Up Thumbs Down

      You can put zeros in front of the number for converting 2 digit numbers to 3 digit numbers. In fact, by induction, you can apply this technique to larger (4-digit, 5-digit etc.) numbers. Takes a bit of practice though.

  • raneubie Its the Human Calculator!!!! by raneubie, 1172552662 Report sent Spam Reply Thumbs Up Thumbs Down

    He's great, has videos out that show how to do all kinds of math in your head and he teaches it to elementary age children!

    Check it out if you are interested. but I am not sure where you can buy the videos anymore, the one I have is pretty old.

    • shortdude1619 cool math trick by shortdude1619, 1172198426 Report sent Spam Reply Thumbs Up Thumbs Down

      http://www.metacafe.com/watch/441990/cool_math_trick/

      • animalcapsule Geeeesh....!! by animalcapsule, 1168323592 Report sent Spam Reply Thumbs Up Thumbs Down

        For a moment my energy surged when i read the title....cool Meth Trick *wheres my foil*

        • thefreakgenius i loved it! by thefreakgenius, 1168228441 Report sent Spam Reply Thumbs Up Thumbs Down

          i failed math twice in high school...wish i woulda had stuff like this then. i learned it though, and i'll probably use it!

          • PsyK_ Cool...Coz by PsyK_, 1167945799 Report sent Spam Reply Thumbs Up Thumbs Down

            Ive never really been able to do maths, like many people my brain is so consumed on downloading porn i forget the little things... such as life.

            • ha_ha Cool by ha_ha, 1167412489 Report sent Spam Reply Thumbs Up Thumbs Down

              I gave you 5 Stars.
              Check this out :))
              http://www.metacafe.com/watch/359247/yet_another/

              • ZephNGirl Trachtenberg's Technique by ZephNGirl, 1166979023 Report sent Spam Reply Thumbs Up Thumbs Down

                This is a technique invented by Tranchtenberg and can apply to any number of digits. The cross multiplications are pair products that are at work.

                • 100eyes Caculator by 100eyes, 1166733991 Report sent Spam Reply Thumbs Up Thumbs Down

                  Yeah, you COULD use a calculator...

                  imagine how smart you'll look when someone else instantly figures out a problem while you stare at the same problem blankly, unable to do anything without your little gadget.

                  Numbers are meaning less unless you learn the theory behind them. It's no surprise United States have some of the most mathematically challenged people in the world.

                  • fb_rido 4digitsx4digits=how can we multiply by fb_rido, 1166471839 Report sent Spam Reply Thumbs Up Thumbs Down

                    pls accept my thanks for teaching us 2digitsx2digits and 3digitsx3digits but what about 4digitsx4digits?pls write an answer
                    take care

                    • andrea81 4 x 4 digits by andrea81, 1168020884 Report sent Spam Reply [+1] Thumbs Up Thumbs Down

                      http://img441.imageshack.us/img441/627/4digitsmn0.png

                      it wasnt hard to figure it out....

                  • Joeka I think.. by Joeka, 1166397779 Report sent Spam Reply Thumbs Up Thumbs Down

                    i think ill just stick with my method lol

                    • this is great can you do this by this is great, 1166169860 Report sent Spam Reply Thumbs Up Thumbs Down

                      to four digit numbers?

                      • this is great can you do this by this is great, 1166169825 Report sent Spam Reply Thumbs Up Thumbs Down

                        to four digit number?

                        • jacksfilms Nice by jacksfilms, 1165989053 Report sent Spam Reply Thumbs Up Thumbs Down

                          I think this is pretty cool. Are there really some people that don't get this?

                          • kpa123 Old Indian method TEERYAK by kpa123, 1165712728 Report sent Spam Reply Thumbs Up Thumbs Down

                            this is an ancient method in India. Not many people know about it. But really a cool method, when you practice enough.
                            I guess, its known by many names, e.g. teeryak

                            • reavenk So,...? by reavenk, 1165699072 Report sent Spam Reply Thumbs Up Thumbs Down

                              It could be me, but this is how you're suppose to normally do it, only he's claiming every box is a substep, and multiplying and adding the red arrows are sub sub steps instead of individual steps. It's like at school where they make you show all your work, even though you could have memorized the additions and numbers to carry. So he's basically doing it normally but showing less written work.

                              • goofba No its different by goofba, 1165700363 Report sent Spam Reply Thumbs Up Thumbs Down

                                The way they teach it in school - you have to write down the 3 numbers before you add them up. You cannot do it mentally in the conventional method, unless you want to add 3 large numbers mentally which can be difficult.

                            • Rasmus^ I'll just by Rasmus^, 1165695677 Report sent Spam Reply Thumbs Up Thumbs Down

                              I'll just use a calculator.

                              • umisspell hmm by umisspell, 1165950134 Report sent Spam Reply Thumbs Up Thumbs Down

                                i dont think he made this video for people who are married to their calculators.

                            • peterl1950 Cool Math Trick by peterl1950, 1165688290 Report sent Spam Reply Thumbs Up Thumbs Down

                              Maybe I'm a dumbo but he didn't explain it in a way I could understand. If that's the standard of teaching in the USA I don't think much of it.

                            • Sayumi_244668 WOOOOOWWWW by Sayumi_244668, 1165687252 Report sent Spam Reply Thumbs Up Thumbs Down

                              Amzing you know how to multiply, do you know your ABC's?

                              • exempt272 yeah! by exempt272, 1165669600 Report sent Spam Reply Thumbs Up Thumbs Down

                                it called a calculator...

                                more than one step man...

                                I thought it was supposed to improve on that old method

                                oh well.

                              • ballerforlifemd or... by ballerforlifemd, 1165643260 Report sent Spam Reply Thumbs Up Thumbs Down

                                you could just multiply them it probly takes same amount of time

                                • matsuo 3 no.s by matsuo, 1165563930 Report sent Spam Reply Thumbs Up Thumbs Down

                                  do you think there would be a simliar matrix-like method to multiply maybe 3 numbers at once?

                                  • Merforga very cool by Merforga, 1165124926 Report sent Spam Reply Thumbs Up Thumbs Down

                                    i liked it , very cool vid

                                    • xxl6 geez by xxl6, 1165024469 Report sent Spam Reply Thumbs Up Thumbs Down

                                      i learned that in 3th grade. But without boxes

                                      • yowza seems like you missed english class by yowza, 1165056504 Report sent Spam Reply [+1] Thumbs Up Thumbs Down

                                        it's 3rd

                                      • umisspell yeah by umisspell, 1165950214 Report sent Spam Reply Thumbs Up Thumbs Down

                                        wait, or maybe he only progressed to 3th oops 3rd grade and dropped out.

                                    • sunm00n The oldest civilization by sunm00n, 1164998742 Report sent Spam Reply Thumbs Up Thumbs Down

                                      The Hindu civilization is the oldest civilization dating back to more than 5000 years, and has been the forerunner for most of the 19th and 20th century inventions. No wonder they have advanced techniques in Maths. I wish we can get more insight into more such easy maths, which will be helpful to students.

                                      • ShamboooZ ummm by ShamboooZ, 1164982335 Report sent Spam Reply Thumbs Up Thumbs Down

                                        im surprised that people don't know this already!!!

                                        • umisspell i think by umisspell, 1165950267 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                          it really depends on the teachers. If the teachers don't know this, then how can they teach it to their students?

                                      • 4un4o nice by 4un4o, 1179353219 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                        but using calculator is way faster.

                                        • idefine faster by idefine, 1206311950 Report sent Spam Reply Thumbs Up Thumbs Down

                                          yea, you fucking idiot. obviously. this is to do it faster in your head or on paper...in the event that you forgot your calculator.

                                      • raneubie correction... human calculator by raneubie, 1172552764 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                        well, i actually don't think this particular video is of the Human Calculator, but there is a guy out there known as the Human Calculator who does this and more and it is very awesome and quite helpful to learn to do quick math with out the help of a calculator in hand

                                        • GrayFox663 omg by GrayFox663, 1168846134 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                          holy shit what the fuck did i just watch.. buy a fucking calculator you fake ass einstein

                                          • tawemo321 useless by tawemo321, 1168322859 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                            why is this method any better than the traditional method? its more complicated, certainly no trick here!!

                                            • sud_uk This is obviously a joke. I hope! by sud_uk, 1168006870 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                              Seriously. This is just long multiplication as taught at a VERY young age at school. It is exactly the same.

                                              • kill_switch that was crap by kill_switch, 1167801607 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                i learnt how to do it twice as fast in year six.

                                                • pragmatist pragmatist by pragmatist, 1167198938 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                  That is totally ridiculous. It is more complicated and no quicker than regular multiplication. It's bogus.

                                                  • pinop952000 I DONT NEED THIS SHITT!!! by pinop952000, 1167028689 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                    NOrmal calculcation is fast enough since you are multiplying 3 digit only!!

                                                    • Action Sam HOLY FREAKIN GOD by Action Sam, 1166740893 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                      I'm pretty sure that's the only way to multiply. It's not special. It's exactly the same way I learned in elementary school. It's the way I do it, my little sister does it, and pretty much the whole world does it. HOW DO YOU HAVE A HIGHER RATING THAN MY PAKOUR VIDEOS!!!!

                                                      • talknshare Tamaso Ma Jyotirgamaya. Good Job. by talknshare, 1166728233 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                        I see some serious efforts of spreading the ancient Vedic Math around the world. I will help it too for this cause. Only problem with these techniques is that we don't have to use it anymore. I mean, we have calculators. Everything evolves. Mark my word dude. If you are a real Mathwiz, let these vedic principles evolve, and not stay limited to these multiplication and division problems. And after that when you really have solved the problems what we face now, that moment will be it. Glorify the celebration of Knowledge.

                                                        • rogy .. by rogy, 1166645950 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                          how is this amazing? they teach that to you at school at the age of 7..

                                                          • adiaz723 OR by adiaz723, 1166565669 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                            Or i can type this into a calculator!!!

                                                            • hybridindian INDIAN POWER!!!!!1 by hybridindian, 1165656523 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                              Need I say more?

                                                              • sportman omg! this good by sportman, 1164935842 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                wow wow wow now my multiplacation will take 5 sec and my friends would be jealous and i would be the best multplier next to this guy how the hell did this guy learn that he is a math discoverer thx for the tip man i am the best mental math boy on the planet next to him

                                                                • Mathwiz Vedic Maths by Mathwiz, 1164970758 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                  Thanks for your comment. It's a technique from an ancient mathematical system from India.

                                                              • 1998civic AMAZING.... by 1998civic, 1164613106 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                That is a good one... :)

                                                                • priyasrdhr Wow... by priyasrdhr, 1164606539 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                  Smart!

                                                                  • gila32 Cool by gila32, 1164606420 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                    Awesome trick!!

                                                                    • gi2joe Nice... by gi2joe, 1164581107 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                      Nice trick !

                                                                      • christy23 Pretty Cool by christy23, 1164578063 Report sent Spam Reply [-1] Thumbs Up Thumbs Down

                                                                        Wow that's pretty fast.

                                                                        • ngonnui BE QUIET by ngonnui, 1165705971 Report sent Spam Reply [-2] Thumbs Up Thumbs Down

                                                                          shut ur trap, can't listen to ur alian lg

                                                                          • umisspell dude by umisspell, 1165950335 Report sent Spam Reply Thumbs Up Thumbs Down

                                                                            its alien, not alian. spell properly or else people might think you came from outerspace.

                                                                          • ngonnui dude reply by ngonnui, 1166595245 Report sent Spam Reply Thumbs Up Thumbs Down

                                                                            UR mom!!

                                                                        59 comments
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