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Exponent rules part 1 | Exponents, radicals, and scientific notation | Pre-Algebra | Khan Academy 

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Introduction to exponent rules
Practice this lesson yourself on KhanAcademy.org right now: www.khanacademy.org/e/exponen...
Watch the next lesson: www.khanacademy.org/math/pre-...
Missed the previous lesson?
www.khanacademy.org/math/pre-...
Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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25 янв 2007

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Комментарии : 580   
@sanaullahkhan4994
@sanaullahkhan4994 2 года назад
i am a sat aspirant going to appear in 2022, im so impressed by the fact that khan academy has continued the legacy of educating students since 14 years. Today is my day i believe i can ace it.
@supbros4924
@supbros4924 Год назад
Are you related or something?
@reueldemetria
@reueldemetria Год назад
Good luck 👍
@gamer-qi9df
@gamer-qi9df Год назад
dam bro
@daynaroman7740
@daynaroman7740 6 лет назад
“I hope I achieved my goal in confusing you” 😂
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
Aww yes 😁 Edit 12/31/22, 9 months later: at 2:20 😇😂
@reina5197
@reina5197 6 лет назад
THIS WAS UPLOADED WHEN I WAS 3 YEARS OLD
@djeng4733
@djeng4733 6 лет назад
same
@willbowling8084
@willbowling8084 6 лет назад
Reina Candelario same
@mayvindeleon6746
@mayvindeleon6746 6 лет назад
When I was 2-_-
@charlieputhfan850
@charlieputhfan850 6 лет назад
4
@kaanto-om5jp
@kaanto-om5jp 6 лет назад
I was 2
@amna0512
@amna0512 5 лет назад
2:19 "I hope I achieved my goal of confusing you just now" *"LeTs dO aNoThEr"*
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
Haha :D
@zazuetaluii
@zazuetaluii 11 лет назад
i am learning this again, in my freshman year of college.
@user-nh3rs9gu6s
@user-nh3rs9gu6s 2 года назад
wow, im currently a freshman, any tips? 😂
@zazuetaluii
@zazuetaluii 2 года назад
@@user-nh3rs9gu6s that was 8 years ago 😅
@jinkim663
@jinkim663 2 года назад
@@zazuetaluii I want to say hi
@scoopwoop2000
@scoopwoop2000 2 года назад
@@zazuetaluii YOU REALLY RESPONDED 8 YEARS LATER
@kananpreetpuri1347
@kananpreetpuri1347 2 года назад
@@scoopwoop2000 lol I think that's the more surprising part
@pspkider
@pspkider 10 лет назад
I'm not learning this. Too busy going through comments.
@bodbod077
@bodbod077 6 лет назад
Me too
@sxju394
@sxju394 4 года назад
pspkider Same lol
@winternight22
@winternight22 12 лет назад
This helped me a lot! I had problems with this cause my teacher couldn't explain it right. Thank you for this video!!!!!!!!!! Who ever the speaker is..... he my hero in math! LOVE YOU SPEAKER!!!!
@fireburnspaper
@fireburnspaper 14 лет назад
Amen FlashBright, I'm gearing up to take the GREs to get into grad school for ART, and I want a good score. Unfortunately I haven't done math in seven years, thanks to these lessons it's all coming back to me so I can actually start studying!
@marymenatti9175
@marymenatti9175 2 года назад
When you show me something that I had once been taught and have forgotten, it’s like finding a pot of gold in my brain. The pleasure of unlocking something that you were once familiar with is a gift. You are entertaining as well, thank you.
@seandeegan2067
@seandeegan2067 6 лет назад
Me: this is probably the level of difficulty I need to watch *starts video* Khan: and this dot means multiply Me: *leaves*
@creampaste1718
@creampaste1718 5 лет назад
Maybe its because some countries use X and not the dot?
@lazydreamer7745
@lazydreamer7745 5 лет назад
Eternity Quartz no, the dot is just more formal then the x
@creampaste1718
@creampaste1718 5 лет назад
@@lazydreamer7745 I never really understood why we use Dot amd not X so thanks for telling me ^^
@pokaay3163
@pokaay3163 5 лет назад
Lmao right. I just kept watching cause I gotta cram all the info into my head before finals in a few weeks.
@martinedwinscarff2947
@martinedwinscarff2947 5 лет назад
We use the dot because x is used as a variable a lot
@ayaanchopra5755
@ayaanchopra5755 3 года назад
I wasn't born when this was uploaded
@capygyu
@capygyu 3 года назад
oml same
@jameelalmuti
@jameelalmuti 3 года назад
that is so sad
@jameelalmuti
@jameelalmuti 3 года назад
what are you like 10?
@butterscotch7633
@butterscotch7633 3 года назад
same
@crudedude1575
@crudedude1575 3 года назад
Oof, man.
@Aquarithyst
@Aquarithyst 9 лет назад
I think what makes Khan Academy's videos better than other math videos is the silly unintentional mistakes he makes while writing the equations XDDDD.
@stephenmartinez3631
@stephenmartinez3631 4 года назад
“That’s a little fatter than I thought it would be but let’s just keep it fat so it doesn’t look weird.” -Khan Also me when I eat a pizza and look at my belly.
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
Me too ^ w ^
@maca673
@maca673 11 лет назад
After a long summer break, this video was a literal lifesaver as I had a math summer assignment that is thankfully due later in September. Thank you!
@davidstach561
@davidstach561 7 лет назад
watching this rn before my quiz gl to me XDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
@enn0vyk
@enn0vyk 6 лет назад
David Stach Hope you passed!
@GoldenCookieYT
@GoldenCookieYT 6 лет назад
yeet
@cinyko439
@cinyko439 3 года назад
lmao 4 years later how’d it go?
@micahmaerazon1739
@micahmaerazon1739 11 лет назад
Thank you for uploading this video khan academy because next week, I have a quarterly exam..and of course math is also one of the test ...so you were a big help...Thanks (Y)
@lilylily-ew5sw
@lilylily-ew5sw 4 года назад
This was uploaded before I was even born!!! Now I needed it!!!
@schrodinger1374
@schrodinger1374 3 года назад
I remember watching this in grade 8 when I struggled in math, now I’m watching it again as I’m going to be tutoring a grade 8!
@carlosa1491
@carlosa1491 4 года назад
This video was uploaded when I was not born.i was born in 2009 this video is from 2007 when RU-vid came up
@jahonthejuul6810
@jahonthejuul6810 5 лет назад
I'm being forced to watch this
@emoqueenfan_3263
@emoqueenfan_3263 4 года назад
Long Live Jahseh me too bro 😔
@bunny8148
@bunny8148 4 года назад
Same
@baboudame3321
@baboudame3321 3 года назад
Same
@Cellus_
@Cellus_ 3 года назад
Same
@TateDailyMotivation
@TateDailyMotivation 3 года назад
My reaction is just OMG , When I noticed this video was uploaded 13 year's ago ! 😍
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
Now 15 😊
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
@@MN-bj4ys wow 😮🥳
@xollox3714
@xollox3714 Год назад
@@nocturnalvisionmusic now 15 too ! (shocked)
@nocturnalvisionmusic
@nocturnalvisionmusic Год назад
@@xollox3714 wow 😁🥳
@xollox3714
@xollox3714 Год назад
@@nocturnalvisionmusic ill write a comment again when it is 16 lol
@mbyrdsong
@mbyrdsong 13 лет назад
It's obvious that Sal is great at math, but I think he could benefit from learning some basic teaching strategies. The academies system works best as refreshers after being taught by a licensed teacher.
@sweetgataux
@sweetgataux 11 лет назад
This helps me so much, thank you!
@marvalousworksent
@marvalousworksent 10 лет назад
Thanks, your method of teaching is helping me with algebra. I'm in culinary school where it is much needed. I never took it in junior or high school. So now I cannot escape! 😱😊 U r the best!!
@Athena1689
@Athena1689 10 лет назад
it is? i thought in culinary the majority of the time fractions are involved..
@papeto24
@papeto24 15 лет назад
THANK YOU!!!!!!! you will help me through school!
@qudsiakhan1135
@qudsiakhan1135 7 лет назад
thanks i aced my test☺☺☺
@emoqueenfan_3263
@emoqueenfan_3263 4 года назад
Qudsia Khan next lets look at quizlet for answers 😆
@youtubegolden4454
@youtubegolden4454 7 лет назад
Help me im forced to watch this by my mom/teacher
@katsteele3400
@katsteele3400 7 лет назад
SAME the tortured
@myristicina.
@myristicina. 7 лет назад
me too lol coz I'm going to year 7 lel
@DiegoHernandez-nz9kn
@DiegoHernandez-nz9kn 7 лет назад
RU-vid Golden rip my dude
@raptorking3899
@raptorking3899 5 лет назад
I just noticed this video was uploaded 12 years ago.....2019 anyone? xD
@bhjosh2886
@bhjosh2886 4 года назад
2020 bro XDXDXDXXD
@TutelaPrep
@TutelaPrep 4 года назад
try checking out this topic at ru-vid.com/show-UCW4WRdbc6cQdYLVUlnqvMkQ
@sidhantsingh322
@sidhantsingh322 4 года назад
2020 even 😅
@bunny8148
@bunny8148 4 года назад
2020... sadly
@themanbehindtheslaughter8414
@themanbehindtheslaughter8414 3 года назад
2020 is the worst year
@Fiorucci79
@Fiorucci79 16 лет назад
Thanks for posting!, very helpful.
@Toaded934
@Toaded934 Год назад
youre old (:
@nazia4887
@nazia4887 11 месяцев назад
Yeh
@horsemileyluver
@horsemileyluver 10 лет назад
Thank you- The struggle is real.
@xollox3714
@xollox3714 Год назад
@danielforsberg4515
@danielforsberg4515 6 лет назад
That addition trick saved me. I've been staring at a homework problem for 2 days and I didn't understand it. I was never taught that trick. Thank you!
@toda9008
@toda9008 7 лет назад
okay I get the multiplying and dividing. But I'm struggling with subtracting exponents with same base. Am I supposed to change it to a division or multiplying equation somehow. 😭😭😭😭😭😭
@jeffreyzhao7137
@jeffreyzhao7137 7 лет назад
U would have to do the exponents then add then together
@MISSINGROGERHOWARTH
@MISSINGROGERHOWARTH 12 лет назад
Thank you for all of your instructions, I am actually learning this...you're good at this teaching thing=))).
@NG_214
@NG_214 13 дней назад
I was not even born when this video was uploaded but today i am in grade 9 and this video is helping me😂 I respect khan academy that how they provide free education 👏 🙌 👍
@oscarraymundo2404
@oscarraymundo2404 6 лет назад
Thanks Khan Academy you explain more than my math teacher
@joeverzino
@joeverzino 8 лет назад
Which program did you use to write characters?
@vec5961
@vec5961 6 лет назад
Joe Verzino Old version Powerpoint nor paint????
@farismalik9032
@farismalik9032 6 лет назад
idroo
@caesar1752
@caesar1752 8 лет назад
Huge help thanks
@elevatedx5563
@elevatedx5563 Год назад
i learned more in under 10 minutes than 2 days...
@ewanxzxz6493
@ewanxzxz6493 10 лет назад
thank you so much
@flamezxxshooterflamezclan8969
@flamezxxshooterflamezclan8969 5 лет назад
Yall hear that sniff at around 1 minute or so. Lol im dead😂😂
@ambigoussquidambigoussquid8191
@ambigoussquidambigoussquid8191 4 года назад
Breh focus on what you are learning not the sniffing
@flamezxxshooterflamezclan8969
@flamezxxshooterflamezclan8969 4 года назад
Ambigoussquid Ambigoussquid stfu
@Irfan_Ali_Faridie
@Irfan_Ali_Faridie 3 года назад
At 1:42
@peihu3201
@peihu3201 7 лет назад
Sal, I like your teaching very much, keep up the great work and I'm mean it.
@seldemitria
@seldemitria 15 лет назад
wow thanks now i dont get confused by this stuff!
@NicoXGA
@NicoXGA 11 лет назад
I'm learning this in college. Beat that!
@mavisevans7545
@mavisevans7545 11 лет назад
Oh my god I hate school. This guys cool, but my mom forced me here. I do the damn math and my dad checks it, changes it around and screws up my grade. Then I get yelled at for it and now I can't watch Smosh, Pewdiepie, or play Animal Crossing. I would like to dedicate this lovely message to my parents, and my lovely retarded school. I love this generation.
@minsoojun1400
@minsoojun1400 7 лет назад
to times to times to times to times to times to times
@travismcree518
@travismcree518 9 лет назад
thanks it helped alot
@naruto10135
@naruto10135 11 лет назад
love this omg
@beeherring654
@beeherring654 3 года назад
this came out when i was born and now im watching it thank you
@david57989
@david57989 4 года назад
Your one of the best math teachers I’ve seen.
@wrongdirectortv6661
@wrongdirectortv6661 4 года назад
lmao im in 8th grade rn, this is for me too look back on 5 years from now
@eseelalsammarraie374
@eseelalsammarraie374 4 года назад
WrongDirectorTV yassss same
@lukesalladin247
@lukesalladin247 2 года назад
great explaining
@dilinisnamedgokhale4064
@dilinisnamedgokhale4064 5 лет назад
Anyone watching in 2019
@jesusesteban8697
@jesusesteban8697 4 года назад
Gok Gaming nah 2020
@silaslingo5290
@silaslingo5290 4 года назад
I'm watching it in 2020
@madeshsan
@madeshsan 3 года назад
I’m just watching this to know the name of the terms in English...Thank you 🌝💕👌🏼
@db9434
@db9434 5 лет назад
thanks, it helped me
@sophia-xi9qg
@sophia-xi9qg 5 лет назад
Bro this really helped me out. *I hate math*
@nocturnalvisionmusic
@nocturnalvisionmusic 2 года назад
3:36 "just want to give you a little bit of a warning" don't know why but I love that part ^w^
@aryoshak2217
@aryoshak2217 Год назад
this vid is a year after youtubes release which is cooool
@harrisoncorey282
@harrisoncorey282 11 лет назад
Thanks bro I am haveing problembs with this (8th grade)
@AMIELrenaissance
@AMIELrenaissance 10 лет назад
So having a negative exponent is acceptable. Thanks!
@supremewarlord410
@supremewarlord410 5 лет назад
Reciprocal only.
@chamillesopys9522
@chamillesopys9522 Год назад
Josiah-you really broke this down for me
@Rilapse
@Rilapse 2 года назад
I know this video is old and all but ever since like the age of 10 I've looked up khan academy if I get confused with math homework so Thanks Khan Academy
@Psypherion
@Psypherion 13 лет назад
What do you mean by "There's 2 to the 8 times 1, 2 to the 8 times 2." at 4:33?
@preetbhele7924
@preetbhele7924 3 года назад
thank youu!
@shamsu7107
@shamsu7107 6 лет назад
good teaching thanks it is help ful to us
@nikitarashivade9211
@nikitarashivade9211 Месяц назад
I was 3 years old when you uploaded this video
@LoverBoyIsKrazy
@LoverBoyIsKrazy 5 лет назад
I'm even more confused
@haejungjeun6780
@haejungjeun6780 10 лет назад
thank you so much you helped me become a achiever!this is really awesome!!!
@sean-pl3us
@sean-pl3us 6 лет назад
i see you korean
@maduagwublessing3256
@maduagwublessing3256 7 лет назад
this is helpful
@gvenagas
@gvenagas 9 месяцев назад
Laws of exponents are really useful when dealing with decimal numbers!
@dawneshahaugabook7173
@dawneshahaugabook7173 8 лет назад
im sorry but can you explain how is 2.2.2=8 because i thought it were 6 i dont get it
@alialbaaj1044
@alialbaaj1044 7 лет назад
Dawnesha Haugabook 2+2+2 = 6 however 2x2x2 is 8 because 2x2=4 and 4x2 = 8 which is 2 to the power of 3
@viixiivxiiviix524
@viixiivxiiviix524 6 лет назад
I have final in math tomorrow morning wish me luck by the way this is helping a lot
@henryreyes3604
@henryreyes3604 10 лет назад
I understand this without u but really ur making it more complicated than it really is
@pinacoladarach
@pinacoladarach 12 лет назад
i love this guy
@biopsbiops2134
@biopsbiops2134 4 года назад
This was uploaded when was 2
@pay8785
@pay8785 4 года назад
trying to understand before my test tomorrow:
@sparshgupta499
@sparshgupta499 6 лет назад
Which software you are using
@endlessstrictures9400
@endlessstrictures9400 6 лет назад
Probably software that doesn't exist anymore.
@marinamaged962
@marinamaged962 5 лет назад
Microsoft paint
@aperson4155
@aperson4155 3 года назад
What if we have a negative exponent for the numerator and a positive exponent on the denominator? Do we still do the same?
@kavyak5449
@kavyak5449 3 года назад
thx for thx video i been useing you website for a long long time this video saved me i will donate ur website 5$
@joeharris8895
@joeharris8895 6 лет назад
Thx so much
@rrraffy666
@rrraffy666 12 лет назад
So what i'm in college and finding this helpful.
@notmisaa8123
@notmisaa8123 6 лет назад
Thanks so much kinda forgot
@Osminiscool
@Osminiscool 15 лет назад
This dude's good with a mouse lol
@skitlzwrath8927
@skitlzwrath8927 3 года назад
Mouse master
@karyan.255
@karyan.255 3 года назад
im replying after 11 years lol, but it isn ta mouse its a tablet or stylus or whatever lol
@hydersunfearless2519
@hydersunfearless2519 3 года назад
lol he was using a stylus pen
@huihui666
@huihui666 11 лет назад
lol, u guys make me feel bad. I'm in grade 11 and just started learning this.. :/
@thesepicbros824
@thesepicbros824 9 лет назад
this was very helpful
@iman1001
@iman1001 2 года назад
watching this video the day before my math EOC
@solracthegamer8659
@solracthegamer8659 2 года назад
yes you have achieved the confusing the watchers
@Badbird-vg7jv
@Badbird-vg7jv 4 года назад
Welcome to 2020
@champsalaar5662
@champsalaar5662 6 лет назад
Thnks
@PurdueRules15
@PurdueRules15 13 лет назад
@juanarruti unless otherwise specified with parantheses, it is the first one
@water6133
@water6133 3 года назад
Thanks
@bezrux7147
@bezrux7147 5 лет назад
khann academy vs math antics both really good
@shreebeautyparlour766
@shreebeautyparlour766 5 лет назад
It was uploaded when I was not born
@whereareyourgoodvibes3818
@whereareyourgoodvibes3818 4 года назад
This was uploaded when I was born-
@njenkins2105
@njenkins2105 Год назад
So when would the average person use this in real life?
@yolandamwita922
@yolandamwita922 3 года назад
THIS WAS UPLOADED BEFORE I WAS BORN
@bluecrys1
@bluecrys1 12 лет назад
in 5th grade we did this and now when i come to 6th grade the first thing is exponets and order of operations. thx i needed help on this alot so thx :3
@eragon41256
@eragon41256 13 лет назад
well i love the videos they help me learn a bit and review it and im only 10
@noonecares1312
@noonecares1312 4 года назад
this was uploaded when i was born
@hammadrahmat7363
@hammadrahmat7363 3 года назад
I was 1yearz old when thhis came out 😉
@jennieb.9779
@jennieb.9779 9 лет назад
ok so my direction was to give the answers in exponential form... what does that mean? my answer suppose to have exponents in it? but number 1 is 5^3 How could change 5^3 to another exponential form or should I just write 125 as the answer?
@QuesFunHouse
@QuesFunHouse 8 лет назад
+Jennie B. maybe they meant the answer should be 5x5x5
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