Mental Addition and Subtraction Tips - Math Tricks with Arthur Benjamin

[@lalalali9767]

This man is a real legend. He just not keep his secrets to himself but share it with every body so that everyone can benefit from it. Love you sir

[@bubbly_snowflakemillie]

fr

[@KazimirKuroi]

but now Im going to gatekeep it

[@theohaywood4199]

Even now, as a 27 year old I struggle to add large numbers in my head. This video is very helpful to me and I think this video is very useful if you don't know how to add or subtract or if you can add and subtract but cannot do it in your head efficiently. Please don't delete this video as its very handy and very informative and keeping the video on KZbin would be beneficial for anyone and everyone. Great work. 👍🙌🙌🙌👏👏👏👍👍

[@timenow5312]

"Scott Flansburg" the human calculator....

[@gravitationalwaverider]

Been teaching my 8 yo granddaughter this. She's in the third grade but tests in the 94 percentile at a 5th+ grade level. This should be taught everywhere.

[@nelsonfung7642]

I have more ways then he taught here .

[@moixemi]

you are a legendary grandpa

[@Liana_2.0]

@@nelsonfung7642 really

[@k7340]

@@nelsonfung7642 make a video then

[@nelsonfung7642]

@@Liana_2.0 yes I am about 6x of speed then others .

[@설리-o2w]

Literally one minute in and I already learnt something so useful. This guy is a genius.

[@julians9070]

I strongly agree with you. The fundamentals of mathematics should be enjoyable .

[@garypoplin4599]

18:58 - I discovered this pattern years ago when I wanted to find compliments to get to multiples of $1000! Adds to nine, adds to nine, adds to ten! Beautiful!

[@Charly_Emi]

Absolute cinema!. I'm always thankful for men like him i'm learning much more than i did in math class

[@respectableaf9061]

My 4 year old loves these videos, math fascinates him. He is only in kindergarten but is a few years ahead of his peers when it comes to math and looks forward to school. I just hope his future teachers will be just as great and informative. They way Arthur Benjamin makes math easy and interesting is a skill in itself.

[@TheGreatCourses]

Thank you for the feedback! We're happy to be part of your kid's learning path and appreciate the nice comments!

[@Cinetiste]

If I may, support his interest without waiting for the school to respond; of course teachers may be positive, however the best attention is at the present. Art, mathematics, wisdom, the best time to learn is now !

[@byronjaya9046]

Thank you for making this video , I am 50 years old and love math and now more , this gentleman has an amazing way to teach . I watch all his videos and I am teaching to my kids 6 and 11 years old. Again thank you .

[@tanjagiljevic7854]

This is wild! No one ever taught addition/subtraction in this manner.

[@nelsonfung7642]

I did for many years.... told my students dont listen to school all the time

[@marychieng2553]

I did this method to my 5 year old and do mentally. She now can add 3 digits mentally. The trick is you have to do every single day. She can also minus in 2 digits. She just 5. This method works wonder

[@drdentin3215]

His mental calendar is fantastic. I use it all the time.

[@207sdmohan]

Arthur benjamin is the best mathemegician in the world i have every single piece of his book

[@dylony6396]

Damn didn't think id learn anything, but that change trick is truly amazing and intuitive

[@lovetownsend]

a min and 30 seconds in and I already learned something, jeezes. The way he said "it'll be 60...something." new way of looking at it, one step at time instead of all at once.

[@kosmik_psychology4363]

He´s so good at explaining these concepts. Even though I knew these concepts from other videos already, I enjoyed every second of it. Wish I had math teachers that could have taught me that when I was younger, its a game changer and makes doing math fun

[@carbomax-gamingonphone9446]

so true

[@KeseteYemane]

Thank you for letting me know how easy it is for Matt.

[@azrielagua631]

this is the most helpful vid i've ever seen

[@LinuxHurts]

His book The Secrets of Mental Math is an excellent buy. He shares all of the techniques in this video and much more! Also, there's another book titled Miracle Math: How To Build A Calculator In Your Head, by Harry Lorrayne. Another excellent book--both make great gifts!

[@deanotmani9772]

My advice for none native English speakers, you might want to do these mental calculations in your original language.. you're mind will put the energy of translation towards calculation therefore faster processing

[@randomazed]

Also, thank you so much, these videos are incredible. I'm 39 and about to go back to school, wanted to brush up on my math and you have been most helpful!!

[@Cinetiste]

Good luck with your study ! You will so succeed, it will be a walk in the park ! 🙂

[@nanda9666]

I am studying chemical engineering and I am here because I am not a native English speaker and I want to move to Ireland. It seems simple, even strange, "why is an engineering student here? I shouldn't know this". I know, I know very well, but getting used to math and calculus in English can help me when I go to Ireland. "You don't build a pyramid from the top to the bottom, if there is no base, there is no pyramid"

[@DennisAdams-p1e]

So informative, marvellous

[@MidhunTalks]

Wonderful class very helpful thank you sir

[@Khaled77114]

You are so genius sir, Thanks a lot

[@Galina-ek8gj]

Thanks for your video, it really helped me with fast metal addition

[@rheac.lerias4846]

There are so much to learn. Thank you for this video.

[@kimberlyAntoine2]

This is so helpful everyone should know about this

[@JaiKishan-lz8yw]

Fantastic method

[@arlenepechardo643]

Thank you so much for this video! Great help... Bless you Sir!

[@ericwazner6521]

👍 Fantastic lecture! Thanks from a fellow backgammon player!

[@hananwalidoden6620]

Alhamdullillah♥️ You help me a lot. Shukran

[@gamerge23]

Where are you from brother

[@KeseteYemane]

Amezing teacher wow i am so happy 👏👏👏🙌

[@EmotionalDamage2024]

This really helped thanks

[@Gojira-b2t]

i was just seeing your 2013 vid like your content cuz i am weak in maths

[@JJcwr]

Great video!

[@mukhtarabebefe7596]

I agree with this but only for the difference of 3 digit random numbers. The other ones are easier and faster for me to get

[@RoshiniAjoy]

I wish I had had this video during my grades

[@frncscbtncrt]

This is great

[@techwonderwithpooja]

Love this method

[@TrustingMyCitrusSoul]

Fantastic tips - I prefer adding and subtracting using these intuitive methods, over the traditional way. Also, I wonder what would happen if you did some deep breathing exercises beforehand, to get more oxygen in the brain. Would that make you a bit faster?

[@hq1082]

19:13 This is exactly what the fck I was missing, THIS THIS RIGHT HERE dear god thank you. An entire decade of piss poor math education solved in an INSTANT.

[@SuccessforLifester]

KZbin recommended this to me after I wrote mathematics and science in a comment a few hours ago. I was subscribed to this channel though but this is first time I am recommended to watch

[@ڤ.ڤ]

Samebut i searched how to be a human calculator

[@SuccessforLifester]

@@ڤ.ڤ ,😯😄

[@fatimaaliibrahim3875]

Thanks 🥰🥰🥰👌

[@ashaacirachannel1500]

Amazing thanks

[@xg3400]

Thank yo I always struggled adding in my head

[@aakashprat]

Saul Goodman is teaching maths in a courtroom. Classic

[@MariamMakharas]

THANK YOUUUU❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

[@jamesglovo8111]

I did technics similar to dat Im glad that the technics are told to other children :)

[@bartoszbarejko1585]

Amazing .

[@prajwalgharad8893]

thank you

[@TrustingMyCitrusSoul]

Does he have a lecture on multiplication anywhere?

[@tomie_valerie]

Thanks

[@GOAT10ROSARIO]

Please give description about paid course of mental maths

[@bovtrap]

2:36 2:40 2:43 2:46 2:47 2:48 2:48 2:49 2:49 2:49 2:50 2:50 2:50 I 3:02 l watch this video all the time and I love ❤️ it so much I wish I could watch this video in my own school 🏫 ! But everybody is going to really laugh 😂at me I don’t care but it still makes me feel depressed 😢. THE END.🎉🎉🎉😅😂.

[@bella_alexisvlog]

Concepts Common sense Believe yourself and Hardwork Then you will get everything

[@eternal___official]

So, anyone knows if im thinking the 3 digiti addition in a weird way? for example, when we add 766 + 489 this is what i do: 7+4 = 11, so its 1100 8+6 = 14, so its 140 1100 + 140 is 100+140 = 240 plus the 1000 = 1240 then 9+6 = 15, so 40+15 = 55 so 1255... Any thoughts?

[@redditaskthem]

Same

[@nelsonfung7642]

took you 2 seconds ? slow took me 1 second

[@RamaSivamani]

That works but treating it as 766+500-11 is less steps so that might potentially be faster if you can recognize immediately that 489 is 11 away from 500.

[@H3XED_OwO]

I did 489+766 = (500-11)+766 = 500+(766-11) = 500+755 = 1200+55 = 1255 I've found it to be the most efficient way by far

[@bruceb85]

I’ll round up and add 800+500 which is 1300, then get the difference from 100 for each. So 34+11 is 45, then just subtract 45 from 1300, which is 1255.

[@paweradwanski8100]

are there any other parts available ?

[@omairahmed99]

Great

[@elijahd.spragueph.d8905]

Can you imagine this professor having Terrance Howard as a student 😂🤣

[@Indiana_Knows]

You should see him play backgammon!

[@terryt.v4938]

1=75 2=81 3=158 4=142

[@riddheepatel1874]

Where is the video for lecture one

[@TheGreatCourses]

Hi! Please check this link: www.thegreatcoursesplus.com/the-secrets-of-mental-math?v=Q2D8pp9lzgQ&lc=Ugz6FDuwP8VwDJHwdhZ4AaABAg If you are not a member, we encourage you to subscribe to get access to all the lectures! :)

[@mdshahnawaz645]

Nice

[@kenesu1281]

✨

[@themusicplayerrjs4055]

❤❤❤

[@SuccessforLifester]

His method was similar to the method I learn from a book I bought many years ago. I think magic math or something by a rather plump author.

[@SuccessforLifester]

@@CuteGirl-ok5rt ok since you are a cute girl, I recalled and researched. It is Math Magic, by Scott Flansburg

[@barbeblanche1581]

@@SuccessforLifester I know this man, it is the human calculator the most quickly man in the world !

[@SuccessforLifester]

@@barbeblanche1581 🙂. I don't know why cute girl message disappeared

[@intentparrot392]

Who beeter scott flansburg or arthur benjamin

[@simca3747]

Wheres his first lecture that he is saying about? The left to right.

[@Solalia]

NAUURRRRR NOT ME SO CONFIDENTALLY SAYING 6 PLUS 7 IS 12 LMAO IM SO DONE WITH MYSELF GOTTA GO BACK TO ADDING AFTER ALL? AYO?

[@tomie_valerie]

Did you get better at mental math now?

[@randomazed]

I would like to know where you're finding these 560cal milkshakes 😅

[@Liana_2.0]

You are so great grandpa I love u I’m your

[@viswajav9657]

19:25 to be continued

[@piumiperera7230]

ordinary people add from right to left,genius add from left to right

[@preciousmikela606]

I like it was very good

[@northeastohiorailfan3466]

good

[@kartikahluwalia8356]

i am asian reacting to this i can say its fine.

[@flateric2k109]

Nobody asking you lil bro😢

[@flateric2k109]

I am gunna touch you lil bro😮

[@federicovaldez8196]

Wow 👌 gg.

[@Charly_Emi]

5:16

[@user-df7qm5tb8e]

17:08

[@priyalsinha8939]

Maths came from our ancient indian period of time still our indian mathematician didnt told us about this simple easy trick . The biggest fault goes to our school teacher who didn't taught us

[@mahmudhabib9084]

14=5 98=8 13=4

[@GoodByeBritain]

Nah this dude is nuts, deadass showed cheat codes rn

[@benquinneyiii7941]

Nasty carryings and borrowings

[@alf63542]

DAMNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

[@capetownenglishclasses521]

استغفر الله العظيم رب العرش العظيم

[@jmlhnry21]

I’m struggling to keep numbers in my head, for example “(766 + 489) 700 + 400 = 1100 after that my mind goes blank with 66 and 89 in order for me to finish solving the problem,” it gets jumbled up in my head.

[@itsmemailingyou4234]

Drill single digits. Sounds simple and wasteful, it is not. You want to know them instantly by recall. Then do it while being distracted by other things until you *know* them. You will know when you are going to have to "carry". When I think 766 + 489, I know 7+5 =12 (to be clear, 6 + 8 is going to result in a "carry"). So I would have 1246 + x as the person telling me the problem is saying the "ty" in eighty. Then when told 9, I would have the entire answer of 1255. When you *know* the single digits by heart, and being distracted, you can calculate the answer as you are being given the problem. No need to remember any numbers already given and can respond with the answer "instantly", even though you have the last number or two to finish completing the calculation. Having the answer a fraction of a second when they are done also allows you to continue the process if they continue with something else to be added. Again, you can discard what is already used. There are times I know the answer, and do not know what the problem was. Being distracted and able to still know allows you to do it while being told more (ie distracted), and use when they say "thousand", "hundred" "ty" to continue building the answer. If looking at a written question, looking at the next digit tells if a "carry" is needed. People under estimate needing to know the single digit, "quick and easy" calculations. That is all that is being done along each step, know them, and you know the answer without doing much other than changing digits to another digit you know they become. Practice using 2 digit numbers. Then you will start learning 2 digits + 2 digits is whatever. Ex. 15 + 35 = 50 (easy for most to instantly recognize), 65+ 26 = 91 (not so obvious for most) and so on. Then when good at 2 digits + 2 digits, move on to 3 digits. Use 1 digit at a time if the problem is verbal, if written use 1, 2 , or 3 digits if you know the larger grouping or not.

[@zetaswoop670]

For the 66 and 89 with ugly numbers I always try to make them look friendlier. My go to steps to solve this would be: 1. take 66+89 and rewrite it as 86+89-20. 2. 80+80 is 160, then subtract 20 for 140. 3. For the 9+6. Make the 9 a 10, then you have 10+6-1. 10+6 is 16, 16-1 is 15 It looks complex and slow but it’s not very hard. The other solution is to just memorize numbers + numbers, and my teachers since 2nd grade criticized me for this method, but it has always been what came easiest to me. Another example is 7+6. 7+7 is 14, 14-1 is 13. It’s just an automatic thought process to me I don’t really think about it. Break down numbers to easier things to do mentally, you will have an easier time. Looking back on it, the other way I would solve it would be to make 66+89 66+90. From there it then becomes 90+10 for 100, then add 50 for 150. Then add 6-1 because you added 1 earlier . Both ways would be my response it’s a tossup for this. Hope this helps!

[@recordgames153]

I’m definitely going to homeschool my kid, I don’t trust any schools anymore. Too political

[@chandini.m8235]

Math will kill me in even after my afterlife.

[@dayhaysuper3639]

boi need a tailor

[@tahopeya]

damn

[@PraiseBT]

82 - 48 is 32 bro not 34 im so confused

[@Iamsopro75]

He is right its 34

[@Iamsopro75]

.

[@Liana_2.0]

What is grandpa name

[@nelsonfung7642]

yes I do have more ways . you want to learn ?

[@alimc1867]

Sadly this doesn't work in german as you say the last digit first and not the first digit. This is if you have 47 for example you say 7 and 40 instead of 40 7, making it somewhat useless to know the ten digit first.

[@alphoncewambura5814]

He is a good magically boy than you your looking him

[@musicandgallery-nature]

That's what we've been hearing since the beginning of the war. But don't worry, it's only the "Army of the Dead" that's fighting there.

[@mohammadsareh4732]

No do not do math in your head that is wron for math learners. They must practice systematic development in writing step by step.

[@educationinstitution7256]

WTF everybody know this

[@M-Trg]

Lovely people said lovely things

[@nikteslaraj2656]

This is really amazing🙏💞....big problem can be divided in small chunks 🤏 & tackle it

[@AkilezNewEngland]

We do it different in South EastASIA the numbers are on the bottom. 50 +50 ---------- 100

[@joykoye]

Thank you