Multiplying in binary | Applying mathematical reasoning | Pre-Algebra | Khan Academy

[@minyo80]

i love short videos like this that go directly to the point

[@thatGUYbehindthemask]

how i would pronounce binary numbers, just because he asked at the end. 101101 un-oh-biun-oh-un 100101 un-bioh-un-oh-un 111010 triun-oh-un-oh un stands for one o stands for zero you can combine strings of the same oh or un by saying bi-tri-quad etc beforehand to specify the number of repeating digits. maybe theres even room for word to specify repeating sequences along with how many times they repeat, but i havent thought it that far through yet.

[@oshii3585]

Yooooo, that's a neat idea. Great job!

[@calebtietz]

Nice naming convention. However, the problem with it is that the "bi", "tri", and "quad" prefixes are in themselves base 10, so you are still using base 10 as a means to describe numbers in base 2

[@catpokerlicense]

Dope asf

[@bnkm07]

why did we add the zeros at the star of the second and third line ?

[@jinmyungkim2835]

this guy is better than my professor's 45min of lecture

[@Diego_2.34]

😂

[@vincedeguia4212]

(2)

[@justvictorgd]

3:39 I have a name for this number! >:D When translating 10,1101 to words, I call it "Two Nib en-five" My system for speaking binary numbers out loud actually works on quadruplets of bits, so it's pretty similar to hexadecimal. "Nib" is equal to 1,0000 and it functions almost exactly how thousands do in decimal. It doesn't have detail by itself, but it's used to achieve larger numbers. "Two Nib" is equal to 10 * 1,0000, or 2 * 16. "Two" is still equal to the quantity of 2. Quantities from "Zero" to "Seven" have the exact same names, actually! The next number essentially use the same words, just with a small prefix. Instead of "Eight" through "Fifteen", the names go "En-zero" through "En-seven". The "En-" prefix stands for "enhanced", and it determines whether or not the leftmost bit inside the quadruplet is active. 0101 = "Five" (no prefix, the leftmost bit is a zero) 1101 = "En-five" (yes prefix, the leftmost bit is a one)

[@gronejczyk8272]

this isnt my accout it was logged on the school computer so now im liking the most randomass videos to ruin this guy's algorythm

[@sethbarrett3392]

These videos need to use tougher examples. Anyone could figure this example out on their own.

[@Mbongeni_Hope_Mhlongo]

True

[@Ashishpatel-xq4uz]

​@@Mbongeni_Hope_Mhlongo agreed

[@ultimategamer8781]

Binary!!! Computers are such awesome things...

[@erikpinter4875]

Thanks so much! I am preparing for my exam and this video helped me a lot!!!

[@1XXAylinXX]

was breaking my brain trying to figure this out from the textbook omg thank you!!

[@Astatos-Lota]

Oh my god that made more sense that the 1 hour lecture

[@samtg7507]

Thank you for the videos they are very helpful !

[@pepper2176]

2:06 I've been doing multiplication since grade school, and that was just new to me xD I usually add the product under the second to the last digit, but I never understood why. Now I know. .-. XD

[@alhusseinfarah4194]

I am uni, I had to go through the old 2 digit multiplication videos I learned in primary school.

[@bryanmonk2283]

Your a lifesaver! THANK YOU SO MUCH

[@avocadoboi7112]

16 hours till my exam, he saved me lol

[@dietpanini4000]

Thank you so much !

[@mathextsgd1992]

thank you khan academy for teaching me when my professors wouldnt

[@zachaeusjohnizrijeanjacque9952]

Realy helpfull for me helped me in my computer exam thanks

[@LilRitchr]

I don’t understand why we have to do this in school rather than multiplying the decimal numbers and then just converting the result into binary?

[@adrianbik3366]

How about performing multiplication inside of computers. They can't understand decimal numbers, so the only tool you could use is this

[@Cobalt985]

If you're working very close to the hardware with computers, this is extremely important information to know. I didn't have to do this in high school though, so if it's part of your curriculum I don't know. I still think it's important to learn how computers work though.

[@frosted482]

this really helped me

[@AzH489]

old but gold, thank you sal

[@KiKi-fy7ev]

The last part were u used base-2 i didn't understand from that one

[@Edward-gb8dx]

The author should do the cool naming exercise he mentioned - giving names to binary numbers! Maybe two legs / or something like that? :-D

[@htww1205]

I came here thinking there would be a simpler solution, like some cheat code, because this type of multiplication is intuitive since we've been doing it from elementary onwards.

[@shahirahamzaoui8949]

if you want a shortcut look somewhere else, this video isn't to help make you faster it's to help you understand.

[@MinopolisMc]

I love this guy

[@abhimag6485]

Thank you

[@tymothylim6550]

Thank you very much for this video :) It was very helpful :)

[@Antagon666]

Hmm, I suddenly got an epiphany, where I relaised you only sum up the number itself bit shifted to the left according to active 1 bit position

[@elijahg1797]

You made this very clear. Thank you.

[@emmavu608]

#YouCanLearnAnything #HappyBirthday #10years #KhanAcademy

[@kendalwilliams5128]

thanks!

[@karimjapparov5324]

thank a million

[@nawaf-hf8vq]

you bid big thanks 🙏 this was amazing

[@rwatson2609]

Perfect. Thanks a bunch.

[@esraamohamed5601]

nice video , Merci!

[@handesu7998]

thank you !! it really helped me

[@ion-alexandrucretan102]

Great!

[@inception252]

3:10 hello confused my ol friend

[@Jojoooooooooooo]

Thank u❤

[@monsterjazzlicks]

These PLAYLIST videos are totally in random order! Very frustrating!

[@itsstami9635]

The video was helpful

[@kxian11]

thanks

[@unoriginalk2665]

thank you my boy

[@nataliee1112]

love your voice

[@Muzzi11]

Thanku soon much bro u are an angle💜

[@waldolemmer]

and u are a line 💜

[@darokahn1025]

man's a whole 45 degrees

[@MG30001]

stunning. would computers run faster if could calculate in e.g base 12?

[@Garbaz]

You would need an electric circut with 12 states... Thats not the only problem, but the first one you will come upon, if you would try to build something like that.

[@JoshLathamTutorials]

+O0oOo8oOo0O Yes if that was possible.

[@nipunramani]

A SMALL transistor with 12 states. Size matters :)

[@angrywolfjr7164]

Yes, but voltage isn't very stable due to a lot of reasons, so having just 1 and 0, as far apart as we can, is quite safe

[@ManishMishra-ke5dl]

Use a little tough examples

[@nihedbens6396]

Your voice 😪❤️❤️❤️

[@monsterjazzlicks]

Why is it called an ALGORITHM please?

[@nicksanfelippo8419]

an algorithm is just a list of steps for solving a problem or carrying out an operation.

[@monsterjazzlicks]

Nick Sanfelippo Thanks, so then basically it's the same as a FORMULA?

[@Jeno097]

A formula is normally a single equation. An algorithm requires a process using a series of steps.

[@CastleBomber]

in one minute, you taught what the book could not xD

[@jffryh]

Forty-five in decimal is one hundred one thousand one hundred one in binary

[@g00st62]

thats the worst way you could go about it, it just leads to a completly wrong image in the mind of people...

[@crusty2o662]

@@g00st62 hey

[@breakthewaterwithurarm3528]

grateful for this video; i now "get" it a little better :)

[@arianaleahborres4767]

Am I the only one realized that he sounds like ranboo but with a deeper voice

[@PrashantKumar-fu5cy]

Please speak in hindhi

[@JAVEENPattom]

learn english he cant just speak hindi

[@kshitizneupane3408]

101*101=?

[@crusty2o662]

Idk

[@crusty2o662]

lol

[@huzaifaahmad9787]

its 11001

[@sivakumarallada8574]

Hey don't be rude Seth Barrett

[@shad0w7x56]

Thank you 👍🏾

[@rajaths7490]

Thanks 🙏

[@hamdial-akkad8339]

Thank you!