Added: 1 year ago
From: khanacademy
Views: 71,715
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:

All Comments (39)

Sign In or Sign Up now to post a comment!
  • PURPLE ELEPHANTS MARCHING DOWN A STREET

  • omg i didnt know that please excuse my dear aunt sally was parentheses and stuffs!

  • hi john and matt whats up this is going to be FLAG AS SPAM

  • 1 person doesn't have an aunt sally

  • I like pickles!

  • sounds like trevor of whitest kids you know lol

  • HI YOUR VIDEOS ARE GREAT. I'VE WATCHED A LOT OF OTHERS AND YOUR'S I CAN ACTUALLY UNDERSTAND VERY WELL.

    Q: WHATS THE ORDER OF YOUR VIDEOS?

    ALSO IN WHAT ORDER SHOULD I BE LEARNING PRE ALGEBRA ALGEBRA?

    ANY SUGGESTIONS FOR STUDY MATERIAL? THANK YOU!!!

  • @ashleyvlunn There is a playlist on pre-algibra

  • jfgfhfsdafghjkl;

    

  • 1 person things order of operations is difficult....

  • Comment removed

  • just refreshing but isn't it supposed to be 16? since multiplications should be prioritized first?

    14+16/4x2

    14+16/8

    14+2

    16

    like that?

  • @medicaltechstudent Multiply and Divide are the same level!! He said that several times...and are done left to right... if you're confused :) Write the division as multiply then work it :) so 16/4*2 is 16*(1/4)*2

  • @medicaltechstudent you have to remember that multiplication and division are at the same level. So you have to divide 16/4 before you multiply by 2.

    14 + 16/4x2

    14 + 4 x 2

    14 + 8

    22

    The reason this works is because multiplication is the inverse of division. 16/4 is really the same thing as 16 x 1/4... either way you look at it the answer would be 4.

  • He explain this so easy in the video. He speaks clearly gets to the point an teaches us without making it confuse us. Wish I had this man as teacher when I was younger I think he would have made me love math an not fear it like all my mindless teachers did..LOL Thanks sir for teaching your wisdom with all us you are truly changing lifes an helping people themself. By trying for their GED knowing that math isnt as hard as we once thought.

  • Im having a problem with my homework

    (-6)-((-2)-5) squared

    i know the answer is -55 but i dont know how to get the answer.

    (-2)-5=-7 squared = 49-(-6)= 55

    why isnt it -55?

  • @buddy767 when you subtract a negitve number it cancels out and become a positive, im pretty sure. sorry if im wrong, im rusty at this myself.

  • B rackets

    E xponents >square roots

    D ivision

    M ultiply

    A ddition

    S ubtraction

  • Comment removed

  • excellent, sir!

  • Where have you been all my life. All my teachers sucked.

  • Pemdas rules !!

  • Do we really need the mnemonic device, which has no basis of logics at all?

    It sticks to your mind longer, if you know why we need to follow the order.

  • @HaoSci Why not have a multitude of ways to understand it? That way people who don't think the same way as you also have a chance to learn the material.

  • @Tehcarp Touché

  • Hey khan I have your videos on my iPod touch and watch them everyday I didn't get to go to school as a kid and always wanted to learn and now I'm on pre algebra just wanted to thank you for posting and I hope you don't quit I'm trying to become a doctor and i gotta learn calculus thanks again!

    Kaeleb

  • Such a good teacher, I could listen to his math videos for hours.

  • pemdas,pvnrt,liate.....

  • omg I remembered "please excuse my dear aunt sally) from YEARS ago, but I could not remember what it related to, to save my life. LOL. I guess thats the danger of using snappy acronyms...

  • technical difficulties.... don't ya hate those !

  • "pemdas" (order of operations) - in order of execution: parenthesis, exponents, multiplication, division, addition, subtraction.

  • wouldn't it be bemdas? I remembered pemdas. 

  • Please

    Excuse

    My

    Dear

    Aunt

    Sally

  • @neoisboring lol miss grade 6 :D

  • BEDMAS is what I was taught.

    Brackets, exponents, div, mult, add, sub

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more