快速數學 Easy Speed Math they Don't Teach You in School – Part 1 – Addition



let's start off with addition addition is used in everyday life all the time and I think it's the most simplest thing to learn so let's take the time now to teach you how to add from left to right it's actually opposite of the way you were taught in school all right I'm gonna give you a couple of examples let's start out with 14 plus 15 now the basic way that you learn how to add you always start on the right and you add them up and then you go over here and you add them up and you're surprised you get an answer I'm going to show you how to go left to right backwards and it eliminates carrying and you'll see how that works in a minute but first off let's start right here this one right there is in the tens column sly stands for ten and this is also in the tens column so that stands for ten so what I do is I start adding left to right going down the columns this way so what's ten plus ten the answer is 20 and then you just go up here to the first number in the next column so 20 plus 4 would give you 24 plus 5 would give you an answer of 29 and simply enough that's the answer 29 all you have to do is read it left to right and keep a running total it's called a base number let's try another one how about 23 plus 13 now the first thing we do is we start on the left now this isn't a tens column this two so that means two tens or 20 and then down here this one stands for ten so what's 20 plus 10 20 plus 10 is 30 and then you go to the next column 30 plus 3 would give you 30 3 plus 3 more would give you 36 and that's the answer let's try one more how about 42 +25 now a little bit bigger first thing we do is we come up here to the top left corner there's a four there stands for four tens or forty this two stands for two tens or 20 so let's add those together first what's 40 plus 20 the answer is 60 and now we just go to the next column 60 plus two is sixty two plus five is sixty seven and that's the answer so you can see how it works all you do is you start on the left going to the right keeping a running total out loud sort of in your head all right so let's try some more numbers but this time I'm going to show you how to carry when you carry numbers it really doesn't matter how you do it because there's no such thing as carrying when you go left to right let me give you an example 24 + 17 now we start on the left again let's go here this two stands for 20 this is 10 so it's 20 + 10 30 and then we come up here to this column what's 30 + 4 34 + 7 so now somebody use your fingers some of you might break it down to 6 and 1 but 34 plus 7 equals 41 so the answer is 41 no carrying you just go from the 30s to the 40s just by adding to your base number let's try another one how about 28 plus 14 starting on the left this is 20 this is 10 what's 20 plus 10 the answer is 30 and then we go up to the next column what's 30 plus 8 the answer is 38 plus 4 more 38 plus 4 what's that you should get 42 so the answer is 42 as you can see you don't carry you just keep adding to that base number it just takes a little bit of practice so I want to give you one more sample before we get into even bigger numbers how about 39 plus 13 starting on the left 30 plus 10 would give you 40 and then up to the next column what's 40 plus 9 49 and then we add the three what's 49 plus 3 you should get 52 so as you can see you never carry you always know what the answer is going to be about right away because you're working with the most significant numbers first the tens instead of the ones and what really is the biggest advantage to learning how to add left to right is the fact that you're understanding how tens and ones work together and how they add together without carrying so I'd like to give you one more example but this time let's try a bunch of through two-digit numbers and add them up in a column like form for example 24 15 31 and 17 a lot of numbers we're gonna go left to right down the columns okay so this 2 right here stands for what that stands for 20 this one stands for head so what's 20 plus 10 you should get 30 and then we add the next number which is 3 or 30 more what's 30 plus 30 you should get 60 and then the next number is a 10 so what's 60 plus 10 you should get 70 and now we come up to the next column what's 70 plus 474 add 5 more what do you get 79 add one more 79 plus one would give you 80 and then 7 more is 87 so the answer to 24 plus 15 plus 31 plus 17 is 87 and all you did was keep a running total in your head left to right and you never have to carry it totally eliminates carrying so what I want you to do now is go into your workbook and you'll see a whole list of examples and I want you to practice this technique that's left to right edition with two-digit numbers make sure that you understand how to go down the columns left to right and you understand that there's no carrying and work on practicing keeping your base number and continually adding to that to get to the answer good luck all right you just finished two digit addition in the workbook and hopefully understood it very well and you can just fly through those now if you're still having a little bit of trouble with it or it's just not making sense to you practice a little bit more go back into the workbook read through it again and try the exercises one more time just to make sure you're really sure that you understand it but if you already have done that and you really feel confident let's move on a three-digit addition a little bit tougher but it's not really once you get into it I'm going to show you some shortcuts how to group a little bit make it a lot easier so let's start out with an easy example how about 243 plus 125 now same concept we're going to go left to right except this time instead of starting at the tens column there's another column out here that's called the hundreds column when there's three digits you have the hundreds tens ones so we're gonna go all the way out to the left this is the hundreds that two right there just stands for two hundred and underneath it is a one which stands for one hundred so now add those up what's two hundred plus 100 you should get three hundred and then we go up to the next column this is the tens column so that four just means 40 so what's 300 plus 40 the answer is 340 and then we add 20 more and you should get 340 plus 20 is 360 and then we just go to the next column what's 360 plus 3 the answer is 360 3 and then 5 more because these are the ones column so what's sixty three plus five you should get three hundred and sixty eight and that's the right answer so you see how easy it is it's the same concept as two-digit addition just remember when there's three digits you're working with the hundreds first then the tens and then the ones let's give it let's give it another shot I'm gonna give you a little bit harder let's do a two hundred and fifty six plus two hundred and thirteen now same idea left to right but you're starting with the hundreds remember so what's 200 plus 200 that should be four hundred and now you move up to the next column what's 400 plus 50 450 and then add 10 more you'll get 460 and then you score to the next column what's 460 plus 6 466 and then add three more 469 is the correct answer that's what you should get now you might be noticing now that it's hard for you to remember the base number as you're going through the examples here's what you do you're always saying it to yourself to keep remembering it that's all I do is I'm going to hundred 400 450 460 466 469 always say the whole number every time just don't go 400 okay that's 50 60 60 that's gonna mess you up and you're gonna forget what you had over here alright so let's try another one how about 350 two plus a hundred and forty five left to right starting with the hundreds three hundred plus 100 gives you four hundred plus fifty four hundred plus 50 should give you 450 add 40 more what's 450 plus 40 490 and then just go up to the ones column what's 490 plus two 492 plus five should give you 497 it's that simple and if you continue to practice left-to-right adding to that base number it'll start to make sense to your brain and it will be easier to remember the numbers as you're going through it just by repeating it over and over again as you add to that base number now what happens if you have to carry let's try three digit numbers with a little bit of a carry just to see how you do and remember you don't really care you just keep adding to that base so let's try 147 plus 124 starting from the left obviously this is 100 this is 100 what's 100 plus 100 you'll get 200 then you go to the tens this for right here stands for 40 so it's 200 plus 40 240 add 20 more and you'll get to 60 then we go to the ones what's 260 plus 7 you'll get 267 and then we've got to add four more what's 267 plus four the answer is 271 see again how you don't even carry you just keep adding to that base number and I have to keep reminding you always say the whole base number don't just say the tens or the hundreds alone say the whole thing every time let's try another one what's 256 plus 125 starting on the Left 200 plus 100 how much is that 300 up to the 50 what's 300 plus 50 350 add 20 more 370 and then we go to the ones what's 370 plus 6 376 and now we add five more what's 376 plus five you should get 381 all right and now I want to sort of try it one more example a little bit harder 249 plus a hundred and thirty-two left to right starting with the hundreds keeping a running total saying the whole number every time 200 plus 100 will give you 300 and then we go to the tens that's a 40 right so what's 300 plus 43 40 add 30 more what do you get 3 40 plus 30 you should get 370 and then we go to the next column what's 370 plus 9 379 and then add 2 more what's 379 plus 2 the answer is 381 hopefully by now you're starting to see how it works where you just keep that running total keep that base number and just keep adding to it and as we get into bigger numbers you'll see how much more effective this is because you don't carry no matter how large the numbers get so what do I do now before you go into the workbook to complete this part of the program I want to give you one more example with a column of three-digit numbers I just want you to give it a try and you'll still see there's no carrying it all just has to do with keeping that base number going let's try a my favorite example 123 216 121 and 214 I always use this example because it's easy to learn how to carry with a column of numbers instead of starting over here now because I want you to realize something too if you start over here now as you've been doing it left to right watch what happens when you go right to left 3 + 6 is 9 10 14 write down a 4 carry a 1 and then you add up 3 4 6 7 and then you add up 1 3 4 you have no idea what the answer is gonna be until the very end notice how easy it is when you're left to right you knew right away this is 600 600 something it's gonna be maybe 6 or 700 but right away you had a good estimation of the answer that's one of the keys of adding left to right so let's try this this is the hundreds column that's a 100 this is a 200 get your running total base number going what's 100 200 300 add another hundred and you'll get 400 200 more will give you 600 now we go up to the tens column that's a 20 right there that's a 10 that's a 20 that's a 10 right so what's 600 plus 20 620 add 10 more you should get 630 how about 20 more you should have 650 and then 10 more will give you a total of 660 so far now you've got 660 and you go to the ones now go slow through this 660 plus 3 is how much 663 add six more you should get 669 all right and now we've got to add one more what's 669 plus one 670 and then four more 670 plus 4 will give you 674 that's the answer to the 123 plus 216 plus 121 plus 214 and remember you never carried just give this a little bit of practice go back into your workbook go through all the examples make sure you get them all right and make sure you understand how you're carrying the numbers without carrying you're just adding to that base number and practice remembering that base number that's the hardest part but it's really easy once you get into it

34 thoughts on “快速數學 Easy Speed Math they Don't Teach You in School – Part 1 – Addition”

  1. Thank you for this. I was always good with English and writing but never great at math. Because of a job I had, I became adept at basic math and prorating. I now have a neuro illness and am back to nowhere with math ability. This video helps so much. The instructor takes away a lot of the fear and is great at demonstrating the techniques. This really makes me wonder why this is not taught in schools. I feel like I was cheated out of a lifetime of math because of how complicated teachers made the subject.

  2. Can you do a vid on when people say numbers to you and then you calculate them in your mind without writing them down writing them down is easy I want a speed math technique that helps me to calculate in my mind without the need of any thing else like a paper or pencil etc Thanks

  3. The thing is having one system for all problems is not the best way at the end. You should use the more logical system for your operation at hand. For the one that added up to 674, the traditional system is better.

  4. Fantastic video, I will watch the other ones as well. This is truly amazing. I was always an idiot at maths, but this will definitely help me.

  5. Lol the title " speed math they don't teach you in school " I wonder what school you go to and hows that fast ?

  6. I envy him cause his smart not like me i don't know nothing hehehe 1like = 1 prayer for me to learn something please help me

  7. And his name is Scott Flansburg – the human calculator.

    For reasons of being graceful and respectful, you should reference the name of this instructor in the video’s description.

  8. Feel unlucky gone 30+years but now i realise how wonderfull subject is this. Hateful was my school days. The moral is
    Way of approach and teaching is the only way to understands even if dumbest ones

  9. Nice way to do it, but I've got a feeling that this method gets messy if you have a problem where you have to "carry" a lot with larger numbers.

  10. Omg this YouTube is amazing because I hate math and I am not good at math but now I am learning and much better. Man u r amazing and smart . Thank you for this YouTube

  11. Now if we can teach our young people working in stores how to make change ….1.) Without the cash register & 2.) God forbid someone gives them $20.01 when their total is $19.76 that stupid look they give!!! I once had a cashier (say in the previous scenario) give me 24 cents for my change then my penny back!!!

  12. Sir how would this technique work if we have a 0 in the provided problem for example if the problem is 800+704

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