Multiplying negative and positive fractions | Fractions | Pre-Algebra | Khan Academy

  Рет қаралды 800,628

Khan Academy

Khan Academy

Күн бұрын

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacadem...
See examples of multiplying and dividing fractions with negative numbers.
Practice this lesson yourself on KhanAcademy.org right now: www.khanacadem...
Watch the next lesson: www.khanacadem...
Missed the previous lesson?
www.khanacadem...
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.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Pre-Algebra channel:: / channel
Subscribe to KhanAcademy: www.youtube.co...

Пікірлер: 167
@boojay8103
@boojay8103 4 жыл бұрын
thx so much i am in 7th grade and i needed the help! :)
@glyphh4608
@glyphh4608 4 жыл бұрын
Me too 😂
@alansvoodoo
@alansvoodoo 4 жыл бұрын
Same!😂
@LilNuss
@LilNuss 3 жыл бұрын
Same
@lhogan1769
@lhogan1769 3 жыл бұрын
same😭
@lalisaverseee
@lalisaverseee 3 жыл бұрын
Ditto!
@paigeglynn4342
@paigeglynn4342 5 жыл бұрын
I am so nervous for my math test but I feel like this is going to help so much thank you
@yoshirivalry
@yoshirivalry 2 жыл бұрын
Ikr
@maria_louise505
@maria_louise505 7 жыл бұрын
They completely skipped over the problem I needed, multiplying negative fractions >:( :(
@aquartzy5418
@aquartzy5418 5 жыл бұрын
Umm are you sure you watched the whole thing?
@batregis
@batregis 4 жыл бұрын
I know my response is late, but he does it at 2:47
@imyourrealsensei
@imyourrealsensei 4 жыл бұрын
BatRegis your response is 3 years late...
@esmathic5800
@esmathic5800 4 жыл бұрын
@@imyourrealsensei your response is 1 month late...
@chill-zombie7686
@chill-zombie7686 3 жыл бұрын
@Nahom Lemma your response is a day late
@higguma
@higguma 7 жыл бұрын
Y'all are some lifesavers. This content helps me brush up on old concepts.
@nik-hv6xz
@nik-hv6xz 9 жыл бұрын
Thank you so much for the help I'm in 7th grade taking pre algebra and it's very complicated so thank u so much
@jackma1075
@jackma1075 5 жыл бұрын
Your a freshman now
@pathfindergee3094
@pathfindergee3094 5 жыл бұрын
Abraham Nehme isnt freshman firstyear?
@jackma1075
@jackma1075 5 жыл бұрын
@@pathfindergee3094 yes it is
@emma-fi2up
@emma-fi2up 5 жыл бұрын
same sksksk but in 2018
@energizeyt7483
@energizeyt7483 5 жыл бұрын
Im in 7th grade and you freshmen now
@Just1_AJ
@Just1_AJ 3 жыл бұрын
I'm only in 6th grade and I got so confused with this thanks for the hwlp
@akhil___abi3349
@akhil___abi3349 3 жыл бұрын
Im 33 years old , i have to teach this my students
@johanesandrewleones6539
@johanesandrewleones6539 2 жыл бұрын
Im 5th grade
@Maarz99
@Maarz99 3 жыл бұрын
Khan academy teaches more stuff in 4 minutes the teachers do in 4 lessons
@calebnissley3346
@calebnissley3346 10 жыл бұрын
Thank you so much it help me alot! Hope i get a good grade on my test. and I'm in adv math.
@ignacy5509
@ignacy5509 2 жыл бұрын
That was 7 yrs ago
@ravensixxle
@ravensixxle 2 жыл бұрын
Same bro
@glogged.
@glogged. 4 жыл бұрын
this sounds oddly soothing with buttercup quietly played over it
@minaljagtap3302
@minaljagtap3302 3 жыл бұрын
Thanks for solving my doubt!! I have an exam tommorow and you helped me alot:)
@GioRios824
@GioRios824 2 жыл бұрын
school used to make us be on khan and now im watching these in youtube years later for math
@EaselsWithWeasels
@EaselsWithWeasels 4 жыл бұрын
Math test in a few mins and its about special products Since there was a fraction one in the examples our teacher gave us i was kinda scared shed put some in the test lmao
@ronanshimmon2328
@ronanshimmon2328 4 жыл бұрын
crazy helpful because I have a test tomorrow
@heatherttd
@heatherttd 8 ай бұрын
lol ik im replying 4 years later, but how did your test go?
@tem9ura425
@tem9ura425 4 жыл бұрын
wait I'm confused I thought you had to do keep change flip when you are multiplying and dividing fractions or did he just skip the step because in the beginning they are dividing?
@friendlyneighborhoodmexica7193
@friendlyneighborhoodmexica7193 4 жыл бұрын
I know that this is from 11 months ago but you only do that in dividing fractions.
@tem9ura425
@tem9ura425 4 жыл бұрын
LMAO I just got a notification for this thanks for the help 11 months later
@poojamathur3480
@poojamathur3480 3 жыл бұрын
@@tem9ura425 OMG LMAO
@nicoleoda508
@nicoleoda508 3 жыл бұрын
I am so confused
@omiomi7085
@omiomi7085 3 жыл бұрын
@@nicoleoda508 you multiply the fractions the way they are. say -5/6 * 1/4. ignore the sign first, multiply 5/6 * 1/4 as it is. if you've reached this lesson, then im taking a guess that you're aware of basic multiplication already. 5*1 is still 5 and 6*4 is 24. the product is going to be 5/24. going back to the sign, since negative (-) * positive (+) equals negative, the final product would be -5/24. i hope this helped.
@joeandseancooking
@joeandseancooking 3 жыл бұрын
Kahn academy kinda da goat now
@jnbarock2904
@jnbarock2904 3 жыл бұрын
I’m in 7th grade u helped me so much to
@syedaabidamudassir7711
@syedaabidamudassir7711 2 жыл бұрын
Thanks for helping
@Bq_nampun
@Bq_nampun 3 жыл бұрын
thx so much I am studying for finals
@ceciliodore
@ceciliodore 3 жыл бұрын
Thank you so much!! Ive been struggling in math and this helped tons!
@nimishamishra2227
@nimishamishra2227 2 жыл бұрын
Thanks I am from india
@weichen5528
@weichen5528 3 жыл бұрын
Thanks for the help I got mcap soon and this will help
@jutay630
@jutay630 7 жыл бұрын
What if it is like this? -1.2 + (-2 1/3)-(-1/6) - 0.8 + (-2/3)??? Im so confused please help me im only grade 5 thanks
@LePowerPig
@LePowerPig 5 жыл бұрын
y r u doing this in 5th grade
@Bored_Peashooter
@Bored_Peashooter 4 жыл бұрын
Cuz advanced math
@angelkat8217
@angelkat8217 3 жыл бұрын
wow i have no idea how to even do that lol
@glodmod6610
@glodmod6610 3 жыл бұрын
It’s a little too late to reply but doing the distributive property would make this a lot easier
@nicoleoda508
@nicoleoda508 3 жыл бұрын
Same here
@johnnoemartinez8712
@johnnoemartinez8712 4 жыл бұрын
Try to multiply the fraction with negative numerator to another fraction with negative sign on it.
@natalializarraga5969
@natalializarraga5969 8 жыл бұрын
thank you for the help🙃
@penscribble8139
@penscribble8139 8 жыл бұрын
Im Only here so I can "Study" cause my mom told me too. XD
@LePowerPig
@LePowerPig 5 жыл бұрын
same
@shozafar3167
@shozafar3167 4 жыл бұрын
so its been 3 years. are you more mature now?
@poojamathur3480
@poojamathur3480 3 жыл бұрын
@@shozafar3167 lol. its four years now
@soda4937
@soda4937 3 жыл бұрын
This helped so much!
@idontpost7786
@idontpost7786 3 жыл бұрын
This helped thank you!!!
@iCantStopTwinkling1
@iCantStopTwinkling1 3 жыл бұрын
POV: your here because your teacher assigned you to watch this
@jayviolations205
@jayviolations205 3 жыл бұрын
Thats exactly why im here XD
@iCantStopTwinkling1
@iCantStopTwinkling1 3 жыл бұрын
@@jayviolations205 lmaoo
@claudinerivera6096
@claudinerivera6096 6 жыл бұрын
I wish there was an equation that had a whole number in one of the fractions
@bellavalegp
@bellavalegp 3 жыл бұрын
helpful
@RustyPotatoGirl
@RustyPotatoGirl 9 жыл бұрын
Is anyone on here actually from Khan Academy? (Other than me)
@salemhamid7785
@salemhamid7785 7 жыл бұрын
yes !!!!!!!me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@vperezg4
@vperezg4 7 жыл бұрын
RustyPotato Girl me
@m1s5ed
@m1s5ed 7 жыл бұрын
yep
@anthony_8266
@anthony_8266 7 жыл бұрын
yeah
@nickcarini1693
@nickcarini1693 7 жыл бұрын
I am
@squishsquad8531
@squishsquad8531 2 жыл бұрын
They made me do this trash in 6th grade, and they were researching fourth grade work in 5th grade😩
@squishsquad8531
@squishsquad8531 2 жыл бұрын
Redoing
@aquartzy5418
@aquartzy5418 5 жыл бұрын
Thank you!
@GarrettH1
@GarrettH1 2 жыл бұрын
What if they don't share common factors are we just done?
@Spaxima
@Spaxima 9 жыл бұрын
thank you so much for the hekp!
@nimishamishra2227
@nimishamishra2227 2 жыл бұрын
In 7 th now need in summer vacation hw
@aiden3557
@aiden3557 2 жыл бұрын
are u supposed to turn them around if they r negative?
@jaronpellham7246
@jaronpellham7246 11 жыл бұрын
@max collen so to get the most simplified version you would use the smallest number that goes into both
@frankiebones848
@frankiebones848 11 жыл бұрын
You would know by practising your times tables and if you had memorized them, you would remember that 21 and 49 are 7 times 3 and 7 times 7. If you don't know, you can try reducing by trial and error starting with 2, if they are even, then 3 etc.
@Blxssom_Olive
@Blxssom_Olive 4 жыл бұрын
No way! I cannot believe when I was taking my math diagnostic I am doing 7th grade math but I am not in 7th grade!
@Bored_Peashooter
@Bored_Peashooter 4 жыл бұрын
OnlineGirlPlayz_Gamez the school curriculum has advanced over time so now 5th graders are doing it like me instead of 7th and 8th graders
@katiema7466
@katiema7466 7 жыл бұрын
IM IN 6 GRADE AND THING IS SOOO EASY LIKE BRUH I LEARNED THIS IN 5TH GRADE IM 100% HONEST RIGHT NOW
@egg-di4826
@egg-di4826 4 жыл бұрын
Bruh I needed something like -1/6 x 1/9
@angelkat8217
@angelkat8217 3 жыл бұрын
bruh same. that's what i came here for
@mohammedarsalaan4921
@mohammedarsalaan4921 7 жыл бұрын
Hi
@matthewdavis2255
@matthewdavis2255 6 жыл бұрын
Mohammed Arsalaan hi
@longo1590
@longo1590 11 жыл бұрын
This Helped Me A lot Thanks
@Bored_Peashooter
@Bored_Peashooter 4 жыл бұрын
But what if the full fraction is negative
@prajinshankarkarthik8013
@prajinshankarkarthik8013 4 жыл бұрын
What is the meaning of your question I didn't seriously understand
@nicoleoda508
@nicoleoda508 3 жыл бұрын
Ya
@nicoleoda508
@nicoleoda508 3 жыл бұрын
He means like say 1 1/2 / -5 9/2
@toddenique9737
@toddenique9737 8 жыл бұрын
what about whole number times a negative fraction
@tituskurian7935
@tituskurian7935 7 жыл бұрын
Convert the whole number to a fraction
@antots7395
@antots7395 6 жыл бұрын
Just put x (whole number) over 1
@vlouds
@vlouds 4 жыл бұрын
I'm on here because I have to do schoolwork anyone else???
@rdrizzle69
@rdrizzle69 8 жыл бұрын
these videos would be half as long if you would just stop talking about your color choices
@Zohirul-Jewel
@Zohirul-Jewel 8 жыл бұрын
He often uses color to show where the numbers are coming from. I have seen many of his videos so trust me the colors do help.
@connormatthies8735
@connormatthies8735 7 жыл бұрын
Grizzle lol
@v.nguyen7177
@v.nguyen7177 6 жыл бұрын
Lol
@jadoremakeup1422
@jadoremakeup1422 2 жыл бұрын
Why didn't you just cross cancel instead of the divide by 15 business??? 5 go into 5 1 time. 5 goes into 15 3 times. 3 goes into 3 1 time. 3 goes into 9 3 times. On the top you have 1 x 1 = 1 on the bottom you have 3 x 3 = 9 which is your 1/9 fraction.
@raddish69420
@raddish69420 2 жыл бұрын
Honestly his method is explained easier to me than what u just said 💀
@jaronpellham7246
@jaronpellham7246 11 жыл бұрын
@max collen 7 is the smallest number that goes into both 21 and 49
@nrramos9280
@nrramos9280 5 жыл бұрын
instead of all those short cuts of reducing multiples of 15 blah blah blah, you could have just multiplied 5*3 over 9*15 showed us the WHOLE step, and then reduced at the end so we didn't get lost coming up with that 1/9!!
@smiledog4162
@smiledog4162 5 жыл бұрын
im stressed because i have a test tomorrow :C
@friendlyneighborhoodmexica7193
@friendlyneighborhoodmexica7193 4 жыл бұрын
What grade did you get?
@purushottamkumarpandey5656
@purushottamkumarpandey5656 3 жыл бұрын
@@friendlyneighborhoodmexica7193 yes smile dog what grade you got?
@VampireMovieForever
@VampireMovieForever 11 жыл бұрын
for the last problem, can you make that a mixed number?
@nicoleoda508
@nicoleoda508 3 жыл бұрын
At 2:50 he skipped a step I know some of this but he skipped a step
@nicoleoda508
@nicoleoda508 3 жыл бұрын
I’m in 5th grade and I really need help
@salemhamid7785
@salemhamid7785 7 жыл бұрын
me and u guys
@lunar_cookie8142
@lunar_cookie8142 2 жыл бұрын
the voice kinda sounds like ranboo tho
@bellavalegp
@bellavalegp 3 жыл бұрын
I have a test in a few minutes :(
@unilluminated9409
@unilluminated9409 3 жыл бұрын
YOUR WIFE IS MY TEACHER!!!!!! I think......
@christophershimp7175
@christophershimp7175 9 жыл бұрын
Use a calculator fox gamer. 😆
@echomylego9858
@echomylego9858 5 жыл бұрын
Man f 7th grade
@nicoleoda508
@nicoleoda508 3 жыл бұрын
He’s completely skipping
@ayanmar3584
@ayanmar3584 7 жыл бұрын
🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌
@aaronfeagin9199
@aaronfeagin9199 5 жыл бұрын
sub
@tman400gyki3
@tman400gyki3 8 жыл бұрын
I have 276 subscribers!!!!
@lookbutdonttouchjackson5264
@lookbutdonttouchjackson5264 4 жыл бұрын
Dude you are skipping over the formula
@orecreeper2128
@orecreeper2128 9 жыл бұрын
Fooooooooooooooooooooooooo
@someoneidk6420
@someoneidk6420 7 жыл бұрын
Boring
@Spaxima
@Spaxima 9 жыл бұрын
hi
@mirandakoral4854
@mirandakoral4854 10 жыл бұрын
Boring
@billykid059
@billykid059 7 жыл бұрын
well its a school subject what do you expect from school besides getting the help to get a job
@aaronfeagin9199
@aaronfeagin9199 5 жыл бұрын
hi
Math Teacher Shows TOP 10 MISTAKES students make
18:43
JensenMath
Рет қаралды 627 М.
I Took a LUNCHBAR OFF A Poster 🤯 #shorts
00:17
Wian
Рет қаралды 15 МЛН
女孩妒忌小丑女? #小丑#shorts
00:34
好人小丑
Рет қаралды 99 МЛН
Underwater Challenge 😱
00:37
Topper Guild
Рет қаралды 47 МЛН
How to Multiply Negative Fractions
5:21
Scam Squad
Рет қаралды 26 М.
Dividing Decimals (with Negatives)
6:00
Sjoberg Math (Move Mind Math)
Рет қаралды 30 М.
12 divided by 2 times 3 all over 2 =? A BASIC Math problem MANY will get WRONG!
13:57
7 times (2 + 18 / 2 x 3) = ? BECAREFUL, many will do this in the WRONG ORDER!
12:47
How to Calculate ANY Fraction Easily!
12:29
tecmath
Рет қаралды 947 М.
10 divided by 10 cubed = ? many are going to get this WRONG!
14:18
TabletClass Math
Рет қаралды 666 М.
I Took a LUNCHBAR OFF A Poster 🤯 #shorts
00:17
Wian
Рет қаралды 15 МЛН